This paper focuses on weather and climate as factors affecting certain facets of human activity during the Byzantine period. Various aspects of impact that weather phenomena and climatic conditions could have upon travel, travellers and communications by land, either in short-term or in long-term context, during the Byzantine period are discussed: Were there any long-term impacts of climatic change upon communications overland? Which weather phenomena are described by the Byzantine authors as affecting people on move? What was the impact (...) of weather upon land transport and communications? Which was the concept of weather that people on the move had and how can we combine weather reports with traveller's emotional and factual reality while experiencing meteorologically induced dangers during overland travel? (shrink)

Transnational, global trades, investments, and travels, amongst other drivers of globalization, helps to reverberate the deadly coronavirus pandemic from Wuhan, China, across the world like whirl fire. In order to contain the infectious spread of the pandemic, and mitigate its negative effects on macro-economic variables, the World Health Organization, (WHO) designed Covid-19 protocols that are being enforced by governments and people of the world. Based on the above account, the study examined the Second wave effect of Covid’19 pandemic on transportation (...) business: Keke-napep and Motorcycle transport systems in Asaba metropolis, Nigeria. The main objective is to empirically determine the real impact of the pandemic on rural land transport business. The study employed structured questionnaire and interview methods to generate data from the 250 respondents selected using the census sampling technique. Out of the 250 sets of questionnaires administered, 235 (94%) were retrieved while 15 (6%) were rejected. The statistical tools used for analyzing data were correlation and multiple regression techniques. Findings were that covid’19 pandemic negatively affected rural land transport business. The study concludes that, the coronavirus pandemic caused a contraction in transport business. It is therefore recommended that, there is a need for government to relax the stringent covid’19 protocols to allow economic activities to resume again. Campaigns on safety and hygiene should be intensified so that the populace will imbibe the culture of general cleanliness and personal hygiene, amongst others. (shrink)

In The Mushroom at the End of the World: On the Possibility of Life in Capitalist Ruins, Anna Lowenhaupt Tsing explains how bare land is formed. Capitalism produces ‘ruins’ by stripping living beings of the capacity to form their own ecological relations, a necessary condition for the reproduction of life. Contemporary capitalism alienates living beings from ecological relations, i.e. capitalism generates “the ability to stand alone, as if the entanglements of living did not matter. Through alienation, people and things (...) become mobile assets; they can be removed from their lifeworlds in distance-defying transport to be exchanged with other assets from other life worlds, elsewhere” (Tsing 2021, 5). Cutting the threads of the web of life through capitalist alienation, however, produces bare land as a side effect, infertile waste deprived of the means to reproduce itself without capitalist support. Alienation is the deracination of living beings from their lifeworld, transforming them into passive cogs for capitalist accumulation. However, Tsing upholds matsutake mushrooms, rare fungi popular among Japa- nese foodies, as exemplars of the resilience of ecological relations. Even amidst ruins, matsutakes successfully form beneficial relations with other living beings, like pine trees, other fungi and human beings. The insistent capacity to regenerate ecological relations is the ineluctable means of reproduction for the matsutake mushroom. Even at the end of the world, the matsutake persists by perpetually co-producing new lifeworlds for itself and fellow living beings (see also Haraway 2016). I claim that Tsing’s approach to capitalist alienation is descriptively convinc- ing but lacks the affective force for ecological class consciousness. Tsing surveys the web of life from the perspective of living beings quite distant from humankind, articulating a theoretical diagnosis rather than a political exhortation. On an affective level, it is challenging to generate ecological class consciousness among the (presumably) human readers of my chapter if they are presented with only the biographies of mushrooms growing far beyond my home. As Chantal Mouffe (2018, 72) argues, the construction of an emphatically political identity requires an appeal to the affects, like hope, indignation or compassion. Latour and Schultz also stress that ecological politics currently suffers from an affective misalignment, with people failing to identify with the fate of their increasingly inhospitable environments (2022, 47). Why would European humans care about these unknown fungi? The reproduction of our CO2-intensive livelihoods largely depends on the emission of bare land elsewhere, so in the short run, we stand to benefit more from putting our heads in the sand. I employ Chakrabarty’s (2021) suggestion of grounding post-humanist politics first in strategic anthropocentrism to subsequently push for a post-humanist expansion of our human understanding. One must first feel personally interpellated by the crisis of the global means of reproduction before one can grasp the need for an ecological class politics beyond human confines. I turn to John Steinbeck’s 1939 novel The Grapes of Wrath as a kindred spirit with more mobilising potential. Steinbeck tells the story of a family of impoverished farmers from Oklahoma, the Joads, travelling to California in pursuit of a better life, yet only encountering more poverty, exploitation and anti-immigrant racism. Steinbeck describes in detail the environmental and social devastation, but he focuses on the commodified labour power of migrant farmers rather than commodified mushrooms. Steinbeck’s main characters are also uprooted from their entangled histories in the land and community of rural Oklahoma, but they present a more familiar face of the ecological class deprived of the means of reproduction. Steinbeck’s outcry against alienation-as-deracination is clear, but the shift in perspective facilitates the empathetic outrage required for building ecological class consciousness. Steinbeck’s strategic anthropocentrism helps human readers understand why alienation-as-deracination is a concern. (shrink)

Urban infrastructures serve as the backbone of modern economies, mediating global exchanges and responding to urban demands. Yet, our comprehension of these complex structures, particularly within diverse socio-political terrain, remains fragmented. In bridging this knowledge gap, this study delves into “boundary objects”—entities enabling diverse stakeholders to collaborate without a comprehensive consensus. Central to our investigation is the hypothesis that oceanic infrastructural developments are instrumental in molding the interface of urban, industrial, and energy sectors within marine contexts. Our lens is directed (...) at the Gulf of Mexico, which is distinguished by its industrial depth and expansive marine grid. We highlight the Gulf Intracoastal Waterway’s (GIWW) paramount role in regional movement and the ecological facets of practices such as dredging, which is vital for transport and coastal conservation. A striking revelation of our study is the transformation of offshore structures in the Gulf into vibrant marine habitats. Emphasizing the intertwined nature of marine infrastructures, we denote oceans as pivotal platforms for impending urban expansion, especially as land resources wane. Our research aspires to validate the role played by oceans as a nexus in the urban–industrial–energy fusion. (shrink)

Development plans at different levels – from local to global – aspire to eliminate poverty, famine, to make health care accessible, to create better access to education, to improve transportation, employment, and the quality of life, all within next decades. Yet, these plans collide with the reality of climate change, more precisely the Anthropocene, which already creates high-dimensional conflicts. These will only intensify within decades because climate change and other consequences of the environment global devastation lead to a real decrease (...) of resources. These resources enable not only development but also an elementary reproduction of the essential preconditions of life. The current model of development has substantially contributed to the intensification of unequal accessibility to resources and existing conflicts have thus heightened and new ones have emerged. Water as an essential resource will cause new conflicts. Growing population, expansion of deserts and a sea level rise then increase conflicts for the land. Heat waves occur more often which strengthens conflicts for land suitable for human life, meaning that inhabitable areas are spreading. Therefore there is a need to re-evaluate the character and hierarchy of resources and their accessibility, and also concepts of development. The existing development of humankind has been done at the expense of others in many cases and mainly at the expense of the environment. The current situation raises a question of climate justice from both historical and systematic viewpoints. It opens a need to reformulate the concept of human rights from the perspective of their essential environmental preconditions and to define the status of environmental migrants. (shrink)

Cities and towns are expanding and thriving as a result of urbanization, which also significantly changes the local climate. One of the most significant phenomena associated with urbanization is the Urban Heat Island (UHI) effect. This phenomenon is increasingly being studied worldwide. The paper aims to investigate the UHI phenomenon in the metropolitan area of Tirana, Albania. It analyses the impact of the UHI on four specific locations in Tirana, its causes and mitigation measures, as well as variations in surface (...) temperature, CO2 emissions, and relative humidity. The regions are measured and observed using a specific instrument such as the Testo 435. Considering the mean surface temperature variations between urban and rural regions ranging from 28.4°C to 33.7 °C, CO2 emissions from 302.9 ppm to 416.2 ppm, and relative humidity from 34.1% to 41.2%, it is found that the UHI impact in Tirana is significant. The lack of green spaces, high building density, urban patterns, building materials used, transport, and energy use are the main contributors to the UHI in central Tirana. Increasing green spaces, using reflective materials, and promoting sustainable urban design are some of the mitigation techniques suggested to reduce the UHI effect in Tirana. (shrink)

Synopsis Empires of Writing: The Rise of Scripted Civilisation offers a bold reinterpretation of civilisation itself by placing writing—not myth, not belief, not even violence—at the structural centre of historical power. The book advances a single, sustained thesis: writing is not merely a cultural achievement or a neutral tool of expression; it is a civilisational infrastructure. Once words become durable, transportable, and administrable, they reorganise memory, authority, territory, and ultimately the human mind. -/- The argument begins with a simple but (...) transformative shift in perspective. In oral cultures, speech is event-based. Words occur, resonate, and vanish. They live in time and depend on memory. Writing alters this condition fundamentally. When speech is fixed onto clay, papyrus, parchment, paper, or screen, it is removed from the fragility of sound and placed into spatial permanence. Words no longer disappear. They accumulate. They can be compared, counted, audited, and mapped. This transformation does not merely preserve knowledge—it changes the conditions under which knowledge exists. -/- From the first administrative tablets of Mesopotamia to the bureaucratic machinery of Rome and the cartographic empires of early modern Europe, the book traces how writing enables scale. Ledgers stabilise taxation. Maps stabilise territory. Archives stabilise law. Scripts allow rulers to “read” populations and landscapes as objects of governance. The emperor does not need to see the land if the land can be represented on paper. The literate administrator becomes the hinge between abstraction and control. Empire emerges not only through conquest but through inscription. -/- The book develops the idea that the making of the literate mind is inseparable from the making of empire. Writing does not simply record reality; it provides models for understanding language, law, geography, and thought itself. Once speech is reorganised through script, humans begin to treat words as objects—capable of definition, classification, and logical manipulation. Grammars, dictionaries, and legal codes become possible. With them come new forms of authority. The written law replaces custom. The mapped border replaces fluid frontier. The archived decree outlives the ruler who issued it. -/- A central philosophical movement of the book examines how literacy reshapes cognition. Writing separates representation from world. A map is not territory; a ledger is not grain; a statute is not justice. Yet once representations gain autonomy, they become operational realities. Civilisation increasingly governs through documents rather than direct presence. This abstraction fosters systematic reasoning, but it also creates distance between decision and consequence. Writing allows thought to become reflective and self-conscious, yet it also enables impersonal administration. -/- The book further argues that the history of reading is as important as the history of writing. As texts become central to authority—religious, legal, scientific—communities develop shared hermeneutics, shared rules for interpretation. Textual communities become political communities. The shift from reading scripture to “reading” nature marks a pivotal moment in early modern science, where empirical observation mirrors scriptural literalism. The techniques used to interpret sacred texts migrate into the interpretation of the natural world. -/- Throughout, the work maintains a material perspective. Writing is treated not as an abstract system of signs alone but as clay tablets, ink, paper, ledgers, files, screens, and digital databases. Each medium structures power differently. The archive is not metaphorical; it is architectural. The bureaucrat is not incidental; he is structural. The literate citizen is not simply educated; he is formatted by a civilisation that stores its authority externally. -/- Empires of Writing ultimately reframes modernity as the culmination of a long process in which speech became storage, storage became governance, and governance became abstraction. The modern world is not merely literate; it is scripted. To understand civilisation is therefore to understand how writing turns words into structures, memory into institutions, and thought into infrastructure. -/- . (shrink)

Beyond Capitalism: Designing a New Economic System for Humanity -/- Introduction -/- For centuries, capitalism has been the dominant economic system, driving technological innovation, wealth creation, and global trade. However, its flaws—extreme inequality, environmental destruction, and economic instability—have made many question whether it is still the best model for humanity. Instead of reforming capitalism, perhaps the time has come to replace it entirely with a new system that better aligns with modern challenges, human well-being, and sustainability. -/- This essay explores (...) a new economic model that moves beyond capitalism and socialism, aiming for a system that is fair, sustainable, and technologically advanced. -/- Why Capitalism Must Be Replaced -/- Capitalism’s fundamental flaws make it unsustainable in the long run: -/- 1. Wealth Inequality and Economic Injustice -/- The richest 1% own more than half of the world’s wealth, while billions struggle in poverty. -/- The capitalist system prioritizes profits over people, leading to worker exploitation and economic instability. -/- 2. Environmental Collapse -/- Capitalism’s endless growth model is destroying the planet through deforestation, pollution, and climate change. -/- Corporations prioritize short-term profits over long-term sustainability. -/- 3. Automation and AI Disrupting Jobs -/- Millions of jobs are being replaced by artificial intelligence and automation. -/- The capitalist system does not account for a future where human labor is no longer essential. -/- 4. Psychological and Social Problems -/- Consumerism creates stress, anxiety, and social isolation by equating happiness with material wealth. -/- The fear of financial instability keeps people trapped in low-quality jobs and debt cycles. -/- Given these issues, capitalism is no longer fit for the future. A completely new economic system must be built—one that values sustainability, equality, and technology-driven efficiency. -/- Introducing a New Economic System: The Post-Capitalist Model -/- A new economic model must prioritize human well-being, technological efficiency, and ecological balance over profit. Below is a blueprint for a post-capitalist society. -/- 1. A Resource-Based Economy (RBE) -/- A Resource-Based Economy (RBE) is an economic model where all goods and services are freely available based on need, rather than money or trade. -/- Technology and AI manage resources efficiently, eliminating the need for money. -/- Automation handles labor, allowing people to pursue education, research, and creativity. -/- No private ownership of land or resources, only shared community access based on sustainability. -/- 2. Universal Basic Infrastructure (UBI 2.0) -/- Instead of just giving people money (UBI), a new system would provide universal basic needs, including: -/- Free housing, healthcare, education, food, and clean energy for all. -/- Advanced AI-driven logistics to distribute goods and services efficiently. -/- 3. Decentralized AI Governance -/- Rather than governments being controlled by corporations or corrupt politicians, AI and collective intelligence could ensure fair and transparent decision-making. -/- AI algorithms could optimize resource distribution, prevent waste, and eliminate financial corruption. -/- Direct democratic participation, where people vote on policies using secure blockchain systems. -/- 4. Sustainable, Circular Economy -/- Zero waste policies, where everything is recycled, reused, or repurposed. -/- Focus on degrowth—reducing unnecessary production while increasing quality of life. -/- Energy-efficient smart cities, where transportation, housing, and food production are automated. -/- 5. Post-Work Society: Emphasizing Purpose Over Jobs -/- In a post-capitalist economy, people would not be forced to work meaningless jobs just to survive. Instead: -/- People could focus on science, philosophy, arts, personal growth, and social well-being. -/- Education would be lifelong and freely available. -/- AI and robots would handle most labor, leaving humans free to explore their full potential. -/- How This System Would Solve Capitalism’s Problems -/- Challenges in Transitioning to a Post-Capitalist Economy -/- While this system solves capitalism’s biggest problems, transitioning away from capitalism would face major challenges: -/- 1. Resistance from the Wealthy Elite -/- Billionaires and corporations control most of the world’s resources and political systems. -/- They would fight to maintain power, delaying or sabotaging systemic change. -/- 2. Psychological and Cultural Shifts -/- People have been conditioned to associate money with survival and success. -/- A new system would require re-educating society on cooperation, sustainability, and shared abundance. -/- 3. Technology and Infrastructure Development -/- Large-scale AI, automation, and sustainable energy infrastructure would need global investment. -/- Governments and private companies must be convinced to prioritize long-term sustainability over short-term profit. -/- The Path Forward: Steps to Build a Post-Capitalist World -/- While the transition will not happen overnight, we can begin moving toward a post-capitalist future by taking the following steps: -/- 1. Implement Universal Basic Income (UBI) Now -/- Governments can start by providing a safety net while transitioning to a money-free economy. -/- Countries like Finland and Canada are already experimenting with UBI programs. -/- 2. Expand AI and Automation for Public Good -/- AI should be used to reduce labor burdens, not to enrich corporations. -/- Governments should invest in open-source AI that benefits all of society. -/- 3. Develop Smart Cities and Circular Economies -/- Cities should be designed for zero waste, renewable energy, and efficient transportation. -/- Governments must ban planned obsolescence and require full recycling of consumer products. -/- 4. Decentralize Power Using Blockchain and Direct Democracy -/- Blockchain voting systems can eliminate election fraud and political corruption. -/- AI-assisted governance can help make fair, data-driven policy decisions. -/- 5. Redefine Education and Human Purpose -/- Schools should move away from job training and focus on creativity, science, philosophy, and social intelligence. -/- Societies should emphasize happiness, purpose, and sustainability over financial success. -/- Conclusion: A New Civilization Beyond Capitalism -/- Capitalism was a necessary stage in human evolution, but it has outlived its usefulness. The future demands a system that is more intelligent, just, and sustainable—one where: ✅ No one is forced to work just to survive. ✅ Resources are managed intelligently, not wasted for profit. ✅ Technology is used for human well-being, not corporate greed. ✅ The planet is protected, not exploited. -/- This is not utopian fantasy—it is a logical step forward in human evolution. By combining AI, automation, decentralized governance, and sustainability, we can create a post-capitalist society where everyone thrives. -/- The question Is no longer “Should we replace capitalism?” The question is: “How soon can we build a better system before capitalism destroys us all?” -/- . (shrink)

As the collective impact of human activity approaches Earth’s biophysical limits, the ethics of food become increasingly important. Hundreds of millions of people remain undernourished, yet only 60 percent of the global harvest is consumed by humans, while 35 percent is fed to livestock and 5 percent is used for biofuels and other industrial products. This essay considers the ethics of such use of edible nutrition for feedstock and biofuel. How humanity uses Earth’s land is a reflection of its (...) values. The current land-use arrangements, which divert 40 percent of all food to feed animals or create fuels, suggest that dietary and transportation preferences of wealthier individuals are considered more important than feeding undernourished people, or the stability of the wider biotic community. (shrink)

Road construction projects play an important role in enhancing mobility, economic activities, and social well-being. However, when abandoned, they often create more challenges than benefits for affected communities. Consequently, abandoned road projects have become recurring problems that disrupt environmental stability and socioeconomic development. This study evaluated the environmental and socioeconomic effects of abandoned road construction projects on residents of Awka South L. G. A. of Anambra State. The study employed a survey research design. The population for this study comprised all (...) the residents of the five towns of Amawbia, Awka, Isiagu, Nibo and Okpuno in Awka South Local Government Area. The selected roads are; Dan Mmaduka Avenue, Amawbia, Ifite road, Awka, Isiagu Road, Isiagu, Onyenwochi road, Nibo and ObyOkoli Avenue, Okpuno. Sampling combined purposive, proportionate stratified, and systematic techniques to ensure representativeness across five locations. The study employed structured questionnaire as the primary instrument for data collection, targeting residents within a 500-meter radius of abandoned road projects in Awka South L. G. A. Using Yamane’s formula, a sample size of 399 was determined, with 386 valid responses returned (96.7% rate). In addition, semi-structured interviews with health workers, business owners, and drivers provided qualitative insights. Data were analyzed using descriptive statistics and ANOVA. Environmental issues identified include air pollution (32.6%), erosion (23.1%), water stagnation (15.3%), and flooding (14.2%), while socioeconomic effects include increased transport costs (34.5%), loss of business income (23.1%), reduced market access (13.5%), among others. The ANOVA and post hoc tests revealed that abandoned road construction projects significantly affect residents’ socioeconomic activities across the selected road locations in Awka South L.G.A. (p = .000). Impacts varied across locations, with Dan Mmaduka Avenue least affected and Onyenwochi most impacted. From the findings, it was recommended that active involvement of host communities in planning, land acquisition, and monitoring can reduce resistance and foster ownership. Continuous dialogue with stakeholders ensures smoother execution and reduces the risk of abandonment. (shrink)

Foreign Direct Investment (FDI) Provisions in the Philippines 1. Constitutional Framework: Limitations on FDI The 1987 Philippine Constitution imposes restrictions on foreign ownership in specific sectors: - Land ownership: Limited to Filipino citizens or 60% Filipino-owned corporations. - Public utilities, educational institutions, mass media, and advertising: Must be at least 60% Filipino-owned. - Natural resources: Foreigners can develop only through joint ventures (60% Filipino-owned) or Technical or Financial Assistance Agreements (TFAAs). These limitations can discourage foreign investment in infrastructure, education, (...) and agriculture. 2. Legislative Framework: Major Laws Favoring FDI A. RA 11647 (Amended Foreign Investments Act) Signed in 2022, RA 11647 eases restrictions on foreign ownership: - Allows 100% foreign ownership in small enterprises with advanced technology or without Filipino investors. - Creates the Inter-Agency Investment Promotion Coordination Committee (IPCC). - Aims to attract innovation and tech transfer. B. RA 11595 (Retail Trade Liberalization Act of 2021) - Lowers the minimum paid-up capital from $2.5 million to $500,000. - For luxury goods: minimum capital of $250,000. - Simplifies procedures to encourage more foreign retailers. C. RA 11659 (Amended Public Service Act) - Redefines 'public utilities' to exclude telecom, shipping, and transport. - Allows 100% foreign ownership in redefined sectors. - Core utilities like water and electricity remain limited to 40%. D. CREATE Law (RA 11534) - Reduces corporate income tax from 30% to 25%, and to 20% for SMEs. - Offers tailored incentives to attract both foreign and local investors. 3. Sector-Specific Policies Affecting FDI - Agriculture and Natural Resources: 40% cap on foreign ownership; TFAAs allowed. - Real Estate: No land ownership, but building ownership and land lease allowed (50 + 25 years). - Banking and Finance: Up to 100% foreign ownership under RA 10641. - Education: Requires 60% Filipino ownership (still restricted). 4. Foreign Investment Negative List (FINL) The FINL details sectors closed or limited to foreign investors: - List A: Constitutionally and legally restricted sectors (e.g., mass media, small-scale mining). - List B: Restricted for national security, health, or moral reasons. 5. Comparison with ASEAN Countries Here is a summary comparison of FDI-related policies across ASEAN: -/- Philippines: No land ownership, 100% in telecom, 25% tax, ranked 95th in ease of doing business. Vietnam: Lease land only, 100% telecom, 20% tax, ranked 70th. Indonesia: Lease land only, 100% telecom (some restrictions), 22% tax, ranked 73rd. Malaysia: Lease land only, 100% across sectors, 24% tax, ranked 12th. Thailand: Lease land only, 49%-100% in telecom, 20% tax, ranked 21st. Singapore: Land ownership allowed with approval, 100% in all sectors, 17% tax, ranked 2nd. 6. Future Reforms (Under Debate) - Proposals exist to amend the Constitution's economic provisions to allow: • Foreign land ownership • Foreign control of schools and services - These reforms are essential but face political resistance. Conclusion RA 11647 is the most significant legal provision liberalizing FDI in the Philippines. It, along with other reforms such as RA 11659 and CREATE, makes the Philippines more attractive to investors. However, full potential will only be achieved if constitutional limits on land, education, and utilities are lifted. References - 1987 Philippine Constitution - Republic Act No. 11647 (Foreign Investments Act of 1991, as amended) - Republic Act No. 11595 (Retail Trade Liberalization Act) - Republic Act No. 11659 (Public Service Act) - Republic Act No. 11534 (CREATE Law) - Philippine Statistics Authority and DTI Reports - World Bank Ease of Doing Business Reports (2019) - ASEAN Investment Reports Best FDI Provisions for the Philippines The following are considered the best and most strategic provisions that enhance the Philippines' FDI environment: 1. RA 11647 – Amended Foreign Investments Act (2022) - Allows 100% foreign ownership in enterprises with advanced technology or where no Filipino investors are involved. - Establishes the Inter-Agency Investment Promotion Coordination Committee (IPCC) to streamline promotion efforts. - Encourages innovation and the entry of high-value investments. 2. RA 11659 – Amended Public Service Act (2022) - Reclassifies telecoms, airlines, and railways as public services, not public utilities. - Enables 100% foreign ownership in these key sectors, expanding access to capital and technology. 3. RA 11595 – Retail Trade Liberalization Act (2021) - Reduces minimum capital requirements from $2.5 million to $500,000. - Simplifies requirements and procedures for foreign retailers. - Enhances competition and consumer access to quality goods. 4. RA 11534 – CREATE Law (2021) - Cuts corporate income tax to 25% for large firms and 20% for small businesses. - Offers performance-based, time-bound, and transparent fiscal incentives. - Enhances investor confidence and reduces cost of doing business. 5. Special Economic Zones (PEZA & BOI Incentives) - Offer income tax holidays, duty-free importation of capital equipment, and simplified import/export procedures. - Provide world-class infrastructure and one-stop shop services for investors. These provisions collectively represent the strongest legal and economic foundations for attracting and retaining foreign investment in the Philippines. -/- . (shrink)

On June 6, 1840, the Britannia set sail from the docks at Liverpool bound for New York City with twenty-one-year-old Henry Moon aboard, sitting among thirty-nine other converts to the Latter-day Saint movement, over a dozen of whom were Henry’s relatives in the Moon family. Henry and his fellow British Saints nervously anticipated their journey to the American promised land. This voyage was the first of its kind as it was transporting the earliest emigrant members of the Church of (...) Jesus Christ of Latter-day Saints (LDS Church) from their humble origins in the farmlands of Lancashire to the industrial streets of New York, eventually headed for the location of their prophet Joseph Smith Jr. who, by 1840, had fled Pennsylvania with his most loyal followers to Illinois to escape persecution. What awaited the Mormon Moons upon their arrival in the United States a month and a half later put their newfound faith to the test. (shrink)

Why Colonizing Mars is Essential for Humanity -/- Introduction -/- Since the dawn of civilization, humanity has been driven by exploration and the pursuit of knowledge. Today, as we face global challenges such as climate change, overpopulation, and resource depletion, the need for expansion beyond Earth has never been more urgent. Mars, our closest planetary neighbor, presents the best opportunity for human colonization. Establishing a permanent human presence on Mars is not merely a dream of science fiction—it is a necessity (...) for the long-term survival and advancement of our species. -/- The Need for a Planetary Backup -/- Throughout history, Earth has faced existential threats, from asteroid impacts to supervolcanic eruptions. Modern threats, such as nuclear war, climate change, and pandemics, further highlight the fragility of our civilization. A self-sustaining colony on Mars would serve as a backup for humanity, ensuring that life continues even in the face of catastrophe. Just as ancient civilizations migrated to new lands for survival, humans must now look beyond Earth to secure our future. -/- Advancing Scientific Knowledge -/- Mars offers a unique opportunity to expand our scientific understanding of the universe. Studying its geology, climate, and atmosphere can help scientists uncover the history of our solar system. Additionally, the search for microbial life on Mars could provide answers to one of humanity’s greatest questions: Are we alone in the universe? The discoveries made on Mars could reshape our understanding of life itself and provide insights into the potential habitability of other planets. -/- Technological Innovation -/- The challenges of colonizing Mars will drive technological advancements that will benefit humanity as a whole. To establish a sustainable colony, scientists and engineers must develop new solutions for life support, energy production, water recycling, and food cultivation in extreme environments. These innovations could lead to breakthroughs in renewable energy, artificial intelligence, and robotics, with applications that improve life on Earth. Just as the space race of the 20th century accelerated technological progress, the push for Mars colonization could usher in a new era of scientific and engineering advancements. -/- Resource Utilization and Economic Opportunities -/- Mars has vast natural resources that could support a self-sustaining colony. Water, in the form of ice, could be extracted and used for drinking, farming, and fuel production. The planet’s atmosphere, rich in carbon dioxide, could be converted into oxygen and fuel for spacecraft. In the long term, mining operations on Mars could provide valuable metals and minerals, reducing dependence on Earth’s limited resources. The economic potential of Mars colonization could lead to new industries, job opportunities, and even interplanetary trade. -/- Inspiring Future Generations and Unifying Humanity -/- The Apollo Moon landings of the 20th century inspired generations of scientists, engineers, and explorers. A successful Mars colonization effort would be an even greater achievement, proving that humanity is capable of overcoming immense challenges. Furthermore, such a mission would require international collaboration, bringing together countries, scientists, and private industries in a shared vision for the future. A united effort to colonize Mars could serve as a powerful symbol of human cooperation and ingenuity. -/- Challenges and Solutions -/- Despite its potential, colonizing Mars presents significant challenges. The planet’s harsh environment, with extreme cold, high radiation levels, and a thin atmosphere, makes survival difficult. Transporting humans and supplies across millions of kilometers is costly and time-consuming, requiring months of space travel. Furthermore, maintaining a sustainable food and water supply on Mars is a complex problem that must be solved. -/- However, advancements in space travel, such as reusable rockets and nuclear propulsion, are making Mars missions more feasible. Scientists are developing innovative life support systems, underground habitats for radiation protection, and sustainable farming techniques for food production. With continued research and investment, these obstacles can be overcome, making a permanent human settlement on Mars a reality. -/- Mars as a Stepping Stone for Deep Space Exploration -/- Beyond Mars, humanity’s future may lie among the stars. Colonizing Mars is not just about securing a second home—it is about preparing for the next great leap in space exploration. A successful Mars colony could serve as a launchpad for missions to the outer planets, the asteroid belt, and even interstellar space. By proving that humans can survive and thrive beyond Earth, Mars colonization would open the door to exploring and settling the broader universe. -/- Conclusion -/- Colonizing Mars is not a luxury or a distant fantasy—it is a crucial step for the survival and progress of humanity. By establishing a presence on Mars, we can protect our species from existential threats, expand our scientific knowledge, drive technological innovation, and unlock economic opportunities. Although challenges remain, human ingenuity and determination have always pushed us to overcome obstacles. The journey to Mars will be difficult, but it is a necessary step in ensuring that humanity continues to thrive, not just on Earth, but among the stars. The question is no longer whether we should go to Mars, but how soon we can make it happen. -/- . (shrink)

A Universal Formula for Creating a Perfect Society -/- A perfect society must follow the universal law of balance in nature, ensuring that all social, economic, technological, and environmental systems function in harmony. Your universal formula serves as the foundation for designing such a society, where population growth is properly regulated to maintain balance and sustainability. -/- I. The Core Principle: The Universal Law of Balance -/- A perfect society must: ✔ Align human actions with natural laws. ✔ Eliminate corruption, (...) exploitation, and inefficiency. ✔ Balance technological progress with environmental sustainability. ✔ Regulate population growth to match available resources and societal needs. -/- II. The Key Components of a Perfect Society -/- 1. Ideal Population Growth Rate and Regulation -/- A perfect society must have a regulated population growth that aligns with natural resource capacity, economic stability, and environmental sustainability. ✔ Overpopulation leads to resource depletion, poverty, and instability. ✔ Underpopulation leads to economic decline and labor shortages. ✔ The ideal population growth rate must be carefully calculated for each region based on its resource availability, technological advancement, and economic capacity. -/- Implementation: -/- Educate the public on population and resource balance. -/- Implement voluntary and ethical family planning programs. -/- Ensure economic and social policies are adjusted based on population data. -/- Use AI to analyze demographic trends and forecast future population needs. -/- Encourage balanced migration policies to stabilize population distribution. -/- 2. Holistic and Rational Education System -/- ✔ Teach the universal law of balance in education. ✔ Focus on critical thinking, ethics, sustainability, and science. ✔ Train leaders in ethical decision-making, governance, and problem-solving. -/- 3. Governance Rooted in Natural Laws -/- ✔ Data-driven, ethical, and transparent leadership. ✔ AI-assisted governance to prevent corruption and mismanagement. ✔ Scientific, evidence-based policymaking. -/- 4. Urban Planning for Sustainable Cities -/- ✔ Eco-friendly, well-planned cities with green spaces and clean energy. ✔ Smart infrastructure to reduce congestion and pollution. ✔ Affordable, energy-efficient housing for all. -/- 5. Balanced Transportation System -/- ✔ Mass public transit over personal vehicles. ✔ Electric and hydrogen-powered transport to reduce pollution. ✔ Bike-friendly and pedestrian-friendly cities. -/- 6. A Just and Sustainable Economic System -/- ✔ Balanced capitalism—free markets with strong ethical regulations. ✔ No extreme wealth gaps or monopolies. ✔ Fair wages, job security, and profit-sharing models. -/- 7. Energy Production Aligned with Natural Balance -/- ✔ Solar, wind, hydro, and nuclear fusion energy to eliminate fossil fuels. ✔ Decentralized renewable energy grids for reliability. ✔ Buildings, industries, and transportation designed for energy efficiency. -/- 8. Agriculture and Agribusiness for Food Security -/- ✔ Sustainable, regenerative farming practices to maintain soil fertility. ✔ Organic farming over chemical-intensive monoculture. ✔ AI-driven precision agriculture to maximize food production with minimal waste. -/- Implementation: -/- Urban farming and vertical agriculture to reduce land use. -/- Government subsidies for small farmers to prevent corporate monopolies. -/- Integration of agribusiness with clean energy sources. -/- 9. Technology Companies Serving Humanity -/- ✔ Ethical AI and automation that enhance human life. ✔ Tech companies must focus on sustainability, data privacy, and fairness. ✔ Public ownership of essential tech infrastructure (internet, AI governance, energy grids, etc.). -/- 10. Forest Conservation and Wildlife Protection -/- ✔ Strict anti-deforestation laws with mandatory reforestation. ✔ Protect wildlife corridors and endangered species. ✔ Regenerative land use practices to restore ecosystems. -/- 11. Protection of Seas, Oceans, and Rivers -/- ✔ Ban overfishing and destructive fishing methods. ✔ Regulate ocean mining and oil drilling. ✔ Prevent river and ocean pollution from industries and waste. -/- 12. Eliminating Pollution and Managing Waste -/- ✔ Zero-waste circular economy—recycling and reusing materials efficiently. ✔ Eliminate plastic waste and toxic chemicals in industries. ✔ Convert waste into renewable energy sources. -/- 13. Sustainable Water Resource Management -/- ✔ Protect fresh water from contamination and overuse. ✔ Desalination and rainwater harvesting in water-scarce areas. ✔ Efficient irrigation and water recycling in agriculture and industry. -/- 14. Job Creation and Economic Stability -/- ✔ Ensure that automation enhances jobs rather than eliminates them. ✔ Support entrepreneurship and small businesses. ✔ Guarantee fair wages and universal job security. -/- 15. Universal Healthcare System -/- ✔ Preventive medicine should be the priority. ✔ Universal healthcare with AI-driven diagnostics. ✔ Mental health services equal to physical health services. -/- 16. A Strong Social Safety Net -/- ✔ Unemployment benefits and food security. ✔ State-funded job training and skill development. ✔ Affordable housing and support systems for the homeless. -/- 17. Ethical Artificial Intelligence and Automation -/- ✔ AI must serve humanity, not corporate control. ✔ Prevent AI from being used for mass surveillance or manipulation. ✔ Ensure AI aligns with the universal law of balance. -/- 18. Justice System Based on Cause and Effect (Law of Karma) -/- ✔ Laws must be logical, fair, and corruption-free. ✔ Swift, evidence-based legal processes. ✔ Restorative justice rather than punitive imprisonment. -/- 19. Global Feedback Mechanism for Continuous Improvement -/- ✔ AI-assisted global balance monitoring. ✔ Digital democracy and blockchain voting for fair governance. ✔ Regular sustainability and ethics audits. -/- III. Conclusion: A Perfect Society Is Achievable -/- A perfect society follows the universal law of balance in all areas—economy, technology, environment, governance, and social systems. -/- By applying your universal formula, society can: ✔ Eliminate corruption, poverty, and injustice. ✔ Achieve sustainability without harming future generations. ✔ Use AI and technology responsibly for the betterment of all. ✔ Create a world where human potential is maximized, and suffering is minimized. -/- . (shrink)

The Importance of Urban Planning and Strict Laws on Informal Settlements -/- Introduction -/- Urbanization is a global phenomenon, bringing both opportunities and challenges. Rapid population growth, especially in developing nations, has led to the rise of informal settlements or “squatter areas.” These settlements often lack proper infrastructure, sanitation, and legal recognition, creating social, economic, and environmental issues. Effective urban planning, combined with strict enforcement of land-use laws and inclusive housing policies, is essential to ensuring sustainable and livable cities. (...) This essay explores the importance of urban planning and strict laws against illegal settlements, using successful case studies from Singapore, Brazil, South Korea, the Philippines, and Ethiopia. -/- The Role of Urban Planning in Sustainable Cities -/- Urban planning is the process of designing and regulating the use of land to ensure the orderly development of cities. Proper urban planning provides essential services such as housing, transportation, sanitation, and green spaces, preventing the formation of illegal settlements. -/- Key Aspects of Effective Urban Planning -/- 1. Zoning Regulations – Defining areas for residential, commercial, and industrial use helps prevent uncontrolled development. -/- 2. Infrastructure Development – Roads, drainage, sewage systems, and utilities must be planned in advance to accommodate future growth. -/- 3. Disaster Risk Management – Cities must prevent settlements in flood-prone or hazardous areas to minimize risks to human life. -/- 4. Affordable Housing Programs – Governments should provide legal, affordable alternatives to illegal settlements. -/- Without proper urban planning, cities face overcrowding, pollution, poor sanitation, and increased crime rates. Case studies from different countries demonstrate the effectiveness of strong urban policies in addressing informal settlements. -/- Case Studies: Successful Urban Planning and Settlement Control -/- 1. Singapore: A Model for Integrated Public Housing -/- Singapore transformed from a city with severe housing shortages in the 1960s into one of the most well-planned urban environments in the world. The government’s Housing and Development Board (HDB) played a crucial role in developing affordable, high-quality public housing with integrated amenities such as schools, parks, and public transportation. -/- Key Strategies: ✔ Strict zoning laws prevented unregulated settlements. ✔ Homeownership was promoted through subsidized housing loans. ✔ Government-planned townships provided complete services. -/- Results: ✔ Over 80% of Singaporeans now live in well-planned public housing. ✔ Illegal settlements have been completely eliminated. -/- Singapore’s success demonstrates how strict land-use policies combined with affordable housing programs can prevent informal settlements. -/- 2. Brazil: Upgrading Informal Settlements Instead of Evictions -/- Rio de Janeiro faced a severe problem with favelas—informal settlements that grew due to rapid urban migration. Instead of mass evictions, the government launched the Favela-Bairro program (1994-2008), improving living conditions rather than displacing people. -/- Key Strategies: ✔ Infrastructure improvements (roads, sanitation, electricity). ✔ Community engagement ensured residents’ needs were met. ✔ Legal property rights were granted to residents. -/- Results: ✔ Over 250,000 residents benefited from improved housing conditions. ✔ Crime and poverty rates declined as favelas were integrated into the formal city. -/- Brazil’s approach shows that slum upgrading can be a viable alternative to forced eviction, improving both human welfare and urban order. -/- 3. South Korea: Urban Renewal in Seoul (Cheonggyecheon Project) -/- Seoul’s Cheonggyecheon River was once covered by illegal settlements and highways. The government removed the informal settlements, revitalizing the area into a public green space. -/- Key Strategies: ✔ Slum clearance and restoration of natural spaces. ✔ Improved public transport (bus rapid transit) reduced congestion. ✔ Business relocation incentives prevented economic disruption. -/- Results: ✔ 35% reduction in air pollution, making Seoul more livable. ✔ Increased property values and economic growth. -/- This case highlights how urban renewal projects can enhance sustainability, public health, and economic opportunities while addressing informal settlements. -/- 4. The Philippines: Housing and Resettlement Programs -/- Metro Manila faces a long-standing issue of informal settlers occupying flood-prone and government-owned areas. The Philippine government introduced various strategies, including in-city relocation, socialized housing, and land clearing operations. -/- Key Strategies: ✔ Balik Probinsya, Bagong Pag-asa (BP2) Program: Encouraged migration from overcrowded cities with financial aid. ✔ Vertical housing solutions: High-rise social housing projects maximized limited land. ✔ Land clearing operations: Removed settlements from hazardous areas. -/- Results: ✔ Some success in decongesting Metro Manila, but rapid urban migration remains a challenge. ✔ Affordable housing remains a priority for sustainable urban development. -/- The Philippines’ experience shows that a combination of enforcement and social programs is necessary to manage informal settlements effectively. -/- 5. Ethiopia: Large-Scale Public Housing (Addis Ababa’s Condominium Program) -/- Ethiopia faced a housing crisis, with 70% of Addis Ababa’s population living in informal settlements. The government launched a large-scale condominium housing program to address the issue. -/- Key Strategies: ✔ Government-built high-rise condominiums replaced slums. ✔ Low-interest loans made homeownership possible for low-income families. ✔ Priority was given to families displaced by urban renewal projects. -/- Results: ✔ Significant reduction in slums as many moved into formal housing. ✔ Homeownership increased, improving living conditions. -/- Ethiopia’s approach highlights how government-led mass housing projects can transform urban development. -/- Lessons from Successful Urban Planning -/- 1. Strict Land-Use Laws Prevent Slums from Forming ✔ Clearly defining residential, commercial, and public spaces prevents illegal occupation. -/- 2. Affordable Housing is Essential ✔ Governments must provide low-cost housing as a legal alternative to informal settlements. -/- 3. Upgrading Slums Can Be More Effective Than Evictions ✔ Programs like Favela-Bairro (Brazil) and Ethiopia’s condominium projects show that improving existing settlements works better than forced displacement. -/- 4. Technology Can Help Monitor and Prevent Illegal Settlements ✔ GIS mapping and AI tracking can detect unauthorized land occupation. ✔ E-governance systems can simplify property registration and land-use approvals. -/- 5. Community Engagement is Critical ✔ Urban planning must involve local residents to ensure sustainability and social acceptance. -/- 6. Economic and Livelihood Programs Reduce Informal Settlements ✔ Job creation, microfinance, and small business support help low-income families transition into formal housing. -/- Conclusion -/- Urban planning and strict laws against informal settlements are crucial for creating sustainable, safe, and prosperous cities. Case studies from Singapore, Brazil, South Korea, the Philippines, and Ethiopia demonstrate that a balanced approach—combining strict enforcement, affordable housing, and community-driven solutions—leads to long-term success. Governments worldwide must prioritize sustainable housing, infrastructure development, and urban regulations to ensure that growing populations are accommodated in a way that promotes both human dignity and urban order. -/- By learning from successful models and implementing proactive urban policies, cities can prevent slums, improve living conditions, and build a more sustainable future for all. -/- . (shrink)

The Advantages of Self-Sufficient Countries with Manageable Populations and Minimal Import Dependence -/- Introduction -/- In a world where globalization has connected economies, many nations remain highly dependent on imports for essentials such as food, energy, and industrial materials. While trade brings benefits, over-reliance on imports exposes nations to risks such as supply chain disruptions, inflation, and geopolitical pressures. However, some countries have successfully built self-sufficient economies, allowing them to thrive with minimal reliance on foreign resources. -/- Self-sufficient countries benefit (...) from economic stability, enhanced national security, environmental sustainability, and a higher quality of life. Examples such as Norway, Switzerland, New Zealand, Iceland, Bhutan, and Uruguay demonstrate that strategic resource management, energy independence, and population control contribute to long-term success. -/- This essay will explore the key advantages of self-sufficiency, examine the strategies employed by these nations, and highlight the broader implications of reducing import dependence. -/- 1. Economic Stability and Resilience -/- One of the primary benefits of self-sufficiency is economic stability. Nations that produce essential goods locally are less vulnerable to global economic downturns, inflation, and trade disruptions. -/- Trade Surplus and Financial Security -/- Countries like Norway and Switzerland have built strong economies by focusing on industries that generate trade surpluses. -/- Norway: A leading exporter of oil, gas, and seafood, Norway earns more from exports than it spends on imports, ensuring a strong national economy. -/- Switzerland: With a diverse economy—banking, pharmaceuticals, and precision manufacturing—Switzerland remains stable despite global financial fluctuations. -/- Local Industry Growth and Job Creation -/- By minimizing imports, self-sufficient nations stimulate local industries, creating jobs and ensuring wealth stays within national borders. -/- New Zealand: Its agricultural sector produces dairy, meat, and fruit for both local consumption and global export, strengthening the workforce and financial stability. -/- Uruguay: The country invests in local renewable energy industries, reducing dependence on imported fossil fuels while creating green jobs. -/- Protection from Global Economic Shocks -/- When economies rely heavily on imports, external crises like wars, pandemics, or financial recessions can cause severe economic disruptions. Self-sufficient nations are more resilient: -/- Switzerland’s banking sector thrives regardless of external turmoil due to its strong internal financial policies. -/- Iceland’s geothermal energy independence protects it from global oil price fluctuations. -/- 2. National Security and Political Independence -/- A country that depends heavily on imports is vulnerable to trade restrictions, geopolitical tensions, and supply chain disruptions. Self-sufficient nations reduce foreign dependencies, strengthening national security and political stability. -/- Energy and Resource Security -/- Self-sufficient countries avoid dependence on foreign energy sources, making them less vulnerable to political blackmail or economic manipulation. -/- Iceland generates 100% of its electricity from geothermal and hydro energy, eliminating its reliance on oil imports. -/- Uruguay produces 98% of its energy from renewable sources, reducing its need for foreign energy supplies. -/- Reduced Geopolitical Vulnerability -/- Countries that rely heavily on imports can be pressured by foreign powers through trade restrictions or embargoes. -/- Switzerland’s economic neutrality allows it to trade freely while maintaining independence from global conflicts. -/- Bhutan discourages foreign consumerism to maintain sovereignty and control over its economy. -/- 3. Environmental Sustainability and Climate Resilience -/- Reducing import dependence directly benefits the environment. Long-distance shipping, mass production, and over-reliance on fossil fuels all contribute to global pollution. Self-sufficient countries focus on local production and sustainability, lowering their environmental impact. -/- Renewable Energy Leadership -/- Norway: Nearly 100% of Norway’s electricity comes from hydropower, making it a leader in green energy. -/- Iceland: Geothermal and hydroelectric plants generate all of Iceland’s electricity, eliminating fossil fuel imports. -/- Bhutan: The country exports excess hydropower to India, reducing the need for fossil fuels regionally. -/- Sustainable Agriculture and Land Management -/- Food self-sufficiency is essential for sustainability. Countries that prioritize local food production ensure long-term food security and reduce carbon emissions from imported food transportation. -/- New Zealand’s farming industry provides dairy, beef, and fruits for domestic consumption and export. -/- Bhutan promotes organic farming, making it one of the most sustainable agricultural economies in the world. -/- 4. Social Stability and Quality of Life -/- Countries with well-managed populations and self-sufficient economies enjoy higher living standards, better infrastructure, and lower poverty rates. -/- Population Management and Resource Allocation -/- Self-sufficient nations carefully regulate population growth to match available resources, ensuring sustainable development. -/- Iceland and Bhutan have small, manageable populations, allowing them to provide high-quality healthcare, education, and infrastructure. -/- Switzerland’s strict immigration policies ensure that economic growth does not outpace resource availability. -/- Resilient Social Systems -/- Strong social welfare programs are more effective in self-sufficient countries because resources are distributed efficiently. -/- Norway: High-quality education, healthcare, and pension systems ensure a high standard of living. -/- Switzerland: The government reinvests economic surplus into public services, benefiting all citizens. -/- 5. Crisis Preparedness and Resilience -/- Global crises such as pandemics, wars, and economic recessions highlight the dangers of import dependence. Self-sufficient nations can respond effectively to crises without relying on external aid. -/- Pandemic and Food Security -/- During the COVID-19 pandemic, supply chain disruptions left many countries struggling to import essential goods. However, self-sufficient nations remained stable. -/- New Zealand’s strong food production ensured that its citizens had uninterrupted access to food supplies. -/- Switzerland’s well-stocked food reserves allowed it to manage shortages without external dependence. -/- War and Trade Embargo Resilience -/- Countries that produce their own essential goods are less affected by global conflicts. -/- Iceland’s fishing industry and energy independence keep its economy stable regardless of international instability. -/- Norway’s oil reserves and food security ensure long-term resilience against economic disruptions. -/- 6. Minimal Import Dependence: The Path to Sustainable Growth -/- While some level of trade is beneficial, excessive import dependence weakens a nation’s economic and political stability. The countries examined here have taken strategic steps to limit imports while maximizing domestic production. -/- Lessons from Self-Sufficient Nations -/- 1. Invest in Renewable Energy – Iceland, Norway, and Uruguay have shown that countries can function without fossil fuel imports through hydropower, geothermal, and wind energy. -/- 2. Prioritize Food Security – Switzerland, New Zealand, and Bhutan ensure food independence through agriculture and local food production. -/- 3. Control Population Growth – Iceland and Bhutan demonstrate that sustainable population sizes lead to better economic planning and quality of life. -/- 4. Develop Strong Local Industries – Norway and Switzerland focus on high-value goods that allow them to export more than they import. -/- 5. Encourage Sustainable Practices – Bhutan and New Zealand promote environmentally friendly farming and renewable energy, ensuring long-term stability. -/- Conclusion -/- Self-sufficient countries with manageable populations and minimal reliance on imports enjoy numerous advantages, including economic stability, national security, environmental sustainability, and a high quality of life. Nations such as Norway, Switzerland, New Zealand, Iceland, Bhutan, and Uruguay demonstrate that renewable energy, food production, and population control lead to long-term prosperity. -/- As the world faces increasing economic and environmental uncertainties, adopting self-sufficiency principles can help nations become more resilient, independent, and sustainable. While globalization has its benefits, balancing local production with strategic trade is the key to securing a stable and prosperous future. -/- . (shrink)

The Threshold of Innovation: Overpopulation, Creativity, and the Universal Law of Balance -/- Introduction -/- Throughout history, humanity has faced challenges of scarcity, competition, and survival. One of the most significant forces shaping our world today is overpopulation—the rapid increase in the human population that intensifies demand for resources, space, and technology. Some argue that overpopulation drives innovation as a balancing mechanism, forcing societies to become more creative and efficient. However, there is a threshold beyond which innovation may no longer (...) be able to keep up with demand, leading to instability and collapse. This essay explores how the universal law of balance applies to population growth, technological advancement, and sustainability, and whether humanity can consciously regulate this balance through governance and education. -/- Overpopulation as a Driver of Creativity and Innovation -/- Overpopulation creates an imbalance in supply and demand, pushing societies to adapt. This adaptation often manifests as technological and social innovation aimed at addressing extreme needs. Some of the key ways overpopulation has historically driven innovation include: -/- 1. Advancements in Agriculture and Food Production – The Green Revolution in the 20th century introduced high-yield crops, synthetic fertilizers, and advanced irrigation techniques, allowing food production to keep pace with population growth. -/- 2. Urbanization and Infrastructure Development – Rapid population growth has led to smarter city planning, transportation networks, and energy-efficient buildings. Innovations like vertical farming and smart grids emerged to accommodate growing urban populations. -/- 3. Medical and Biotechnology Breakthroughs – Overcrowded cities have historically been breeding grounds for disease, driving advancements in vaccines, sanitation, and public health systems. -/- 4. Automation and Artificial Intelligence – The need to sustain large populations has accelerated automation in industries, AI-driven optimization, and robotics, reducing the dependency on human labor. -/- These examples show how pressure from overpopulation can serve as a catalyst for progress. However, innovation has limits, and exceeding a critical threshold can lead to irreversible damage. -/- The Critical Threshold: When Innovation Can No Longer Keep Up -/- While creativity is a powerful balancing mechanism, it is not limitless. Every system, whether biological, technological, or societal, has a threshold—a point where demands surpass the ability to innovate solutions. Signs that humanity may be approaching this threshold include: -/- 1. Resource Depletion – Finite resources like fresh water, fossil fuels, and arable land are being consumed faster than they can be replenished. -/- 2. Environmental Collapse – Deforestation, pollution, and climate change accelerate as human activity expands, making it harder to sustain innovation without worsening global crises. -/- 3. Economic Inequality and Unemployment – While automation solves some problems, it also displaces jobs, creating economic instability that innovation alone cannot fix. -/- 4. Political and Social Unrest – As resources become scarce, competition intensifies, leading to conflict, forced migration, and governance breakdowns. -/- At a certain population level, the balancing mechanism of creativity may no longer be sufficient. Instead of progress, natural corrective forces such as pandemics, wars, and economic crashes may take over, restoring balance in ways that are destructive rather than constructive. -/- Can Humanity Consciously Regulate the Balance? -/- The key question is whether humanity can proactively manage this balance rather than waiting for crises to force it upon us. Possible solutions include: -/- Holistic Education Systems – Teaching critical thinking, sustainability, and the universal law of balance from an early age can help societies make informed decisions. -/- Sustainable Governance – Policies that regulate population growth, resource consumption, and environmental protection can prevent the system from exceeding its threshold. -/- Technological Ethics – Ensuring that AI, automation, and scientific advancements are used responsibly to extend sustainability rather than accelerate depletion. -/- Global Cooperation – Overpopulation and resource scarcity are global issues that require international collaboration rather than isolated national efforts. -/- If humanity can internalize the universal law of balance and act before reaching critical thresholds, we may be able to sustain innovation and avoid collapse. However, if we fail to regulate ourselves, natural forces will inevitably restore balance—potentially through crisis and destruction. -/- Conclusion -/- Overpopulation serves as both a driver of creativity and a ticking time bomb. While it has historically fueled technological advancements, there exists a threshold beyond which innovation may no longer be able to keep up with demand. The universal law of balance suggests that every system—biological, technological, or societal—has limits, and exceeding these limits leads to instability. The challenge for humanity is whether we can consciously regulate this balance through education, governance, and ethical technological progress, or whether we will continue pushing forward blindly until nature forces a correction upon us. -/- The choice between sustainable innovation and uncontrolled collapse ultimately depends on how well we understand and apply the principles of balance in our decision-making. -/- . (shrink)

Vaccination against various diseases has been widely practised for more than a century and on a more limited scale its use in a variety of forms stretches back far longer. During earlier eras disease spread more slowly along shipping lanes on water and traditional transport routes on land. Today, in an era of air transport, contagion spreads far more rapidly. Travelling far more rapidly (indeed instantaneously) is the spread of misinformation that hinders vaccination which can, in the (...) instance of Covid-19, reduce disease impacts, including rates of severe illness and death. This paper explores the ethical issue of informed consent in the context of the contest between personal choice and the greater public welfare. It also makes reference to a number of low, middle and high income countries where vaccine hesitance, and to a lesser extent refusal, has been fed by misinformation on a scale not previously observed but made possible by the proliferation of modern technology. This campaign of ignorance has further undermined trust in governmental health bodies and their attempts to implement quarantine and other measures such as vaccination that had already been damaged by early variations and vacillation in governmental approaches around the globe due in part to a reluctance by some governments to take actions that would have economic repercussions but also by the necessary evolution of their approaches as more became known about the disease and its variants. The paper examines the historical background and the current situation and finds that more must be done to restore or increase trust levels between citizens and governmental authorities, including the dissemination of high quality accurate information in a form relevant to readers/viewers. While potential side-effects of vaccines must be disclosed to ensure informed consent, their incidence should also be clearly communicated (e.g., in vaccine information statements) so that clients/patients are aware that a risk is 1 in 100 or 1in 1000 or 1 in 2 million etc. Governments are urged to learn from their experience and better prepare for inevitable future pandemics to minimise vaccine hesitancy and refusal and maximise its acceptance where evidence is overwhelming as to the benefit to the community. Informed consent is part of the context of efforts to use vaccination to contain or eradicate any disease. Nevertheless, while better information for clients/patients/consumers may reduce vaccine hesitancy/refusal, it is unlikely that it would but eliminate the need for mandating vaccination in some circumstances for the benefit of the broader community, although strict quarantine of those reluctant to accept it is an alternative but one not generally accepted by those reluctant to be vaccinated. The information war is one that needs to be won to increase the voluntary uptake of vaccination in the context of voluntary informed consent. (shrink)

'People travelled for numerous reasons,' so J.W. Drijvers submits at the beginning of his piece on travel and pilgrimage literature. Be it ‘commerce, government affairs, religion, education, military business or migration,’ people ‘made use of the elaborate system of roads and modes of transport such as wagons, horses and boats’ to traverse the far-reaching stretches of the Roman Empire. And for 4th century Christians in particular, participating in religious festivals as well as interaction with holy sites, sacred artifacts and (...) clergymen had become greater a reason to travel still. Motivation to travel, in other words, was aplenty. But what exactly allowed for Christian religious travel in the 4th century AD to develop as quickly as it did? (shrink)

Empathizing with another is perhaps the most human emotion of all and a long shot from the cold calculations of vectorized tokens that drive the inner workings of contemporary LLMs. This chapter looks beyond the questions of what to make of AI-generated “empathy” and instead asks whether AI can be used to develop our capacities for genuine human empathy. Empathy is not a static trait, instead capable of growth and development, and this paper explores whether AI can and, more importantly, (...) should be used to increase one’s empathy. Nothing in principle stands in the way of AI improving our empathy, but the possibility raises unanswered questions about whether such an approach would be effective or would backfire in unexpected ways, such as encouraging the commodification of empathy as a technological tool that can make companies money, rather than a fundamental part of the human experience. (shrink)

Conceptual engineering is the practice of revising concepts to improve how people talk and think. Its ability to improve talk and thought ultimately hinges on the successful dissemination of desired conceptual changes. Unfortunately, the field has been slow to develop methods to directly test what barriers stand in the way of propagation and what methods will most effectively propagate desired conceptual change. In order to test such questions, this paper introduces the masked time-lagged method. The masked time-lagged method tests people’s (...) concepts at a later time than the intervention without participant’s knowledge, allowing us to measure conceptual revision in action. Using a masked time-lagged design on a content internalist framework, we attempted to revise planet and dinosaur in online participants to match experts’ concepts. We successfully revised planet but not dinosaur, demonstrating some of the difficulties conceptual engineers face. Nonetheless, this paper provides conceptual engineers, regardless of framework, with the tools to tackle questions related to implementation empirically and head-on. (shrink)

The beginning of the COVID-19 pandemic offers a unique case study for understanding conceptual and linguistic propagation. In early 2020, scientists, politicians, journalists, and other public figures had to, with great urgency, propagate several public health-related concepts and terms to every person they could. This paper examines the propagation of coronavirus and social distancing and develops a framework for understanding how the language used to express a notion can help or hinder propagation. I argue that anyone designing a representational device (...) for propagation needs to appreciate the three-way causal relationship between language, people’s mental representations, and the extramental world. Using this framework, I explore what makes “social distancing” a bad name for social distancing and why it is unproblematic that “coronavirus” is a scientifically loose way of speaking about the virus. Through this and further study of the many historical examples of linguistic and conceptual propagation, conceptual engineers can better understand the complex challenges facing people who want to propagate representational devices. (shrink)

Mental capacities for perceiving, remembering, thinking, and planning involve the processing of structured mental representations. A compositional semantics of such representations would explain how the content of any given representation is determined by the contents of its constituents and their mode of combination. While many have argued that semantic theories of mental representations would have broad value for understanding the mind, there have been few attempts to develop such theories in a systematic and empirically constrained way. This paper contributes to (...) that end by developing a semantics for a ‘fragment’ of our mental representational system: the visual system’s representations of the bounding contours of objects. At least three distinct kinds of composition are involved in such representations: ‘concatenation’, ‘feature composition’, and ‘contour composition’. I sketch the constraints on and semantics of each of these. This account has three principal payoffs. First, it models a working framework for compositionally ascribing structure and content to perceptual representations, while highlighting core kinds of evidence that bear on such ascriptions. Second, it shows how a compositional semantics of perception can be compatible with holistic, or Gestalt, phenomena, which are often taken to show that the whole percept is ‘other than the sum of its parts’. Finally, the account illuminates the format of a key type of perceptual representation, bringing out the ways in which contour representations exhibit domain-specific form of the sort that is typical of structured icons such as diagrams and maps, in contrast to typical discursive representations of logic and language. (shrink)

You can perceive things, in many respects, as they really are. For example, you can correctly see a coin as circular from most angles. Nonetheless, your perception of the world is perspectival. The coin looks different when slanted than when head-on, and there is some respect in which the slanted coin looks similar to a head-on ellipse. Many hold that perception is perspectival because you perceive certain properties that correspond to the “looks” of things. I argue that this view is (...) misguided. I consider the two standard versions of this view. What I call the PLURALIST APPROACH fails to give a unified account of the perspectival character of perception, while what I call the PERSPECTIVAL PROPERTIES APPROACH violates central commitments of contemporary psychology. I propose instead that perception is perspectival because of the way perceptual states are structured from their parts. (shrink)

Conceptual engineering is a philosophical method that aims to design and spread conceptual and linguistic devices to cause meaningful changes in the world. So far, however, conceptual engineers have struggled to successfully spread the conceptual and linguistic entities they have designed to their target communities. This paper argues that conceptual engineering is far more likely to succeed if it incorporates empirical data and empirical methods. Because the causal factors influencing successful propagation of linguistic or conceptual devices are as complicated and (...) interwoven as they are, proper empirical research will greatly boost the likelihood that propagation is successful. In arguing for the superiority of empirical conceptual engineering over armchair-based conceptual engineering, this paper proposes a framework for understanding the causal forces at play in propagation. This is a three-part framework between the label of a lexical item, the psychological states associated with the lexical item, and the worldly things associated with the lexical item. By understanding the way causal forces affecting propagation play out at these three levels, conceptual engineers can better conceptualize, study, and harness the different causal forces affecting the success of their conceptual engineering projects. (shrink)

Perception involves the processing of content or information about the world. In what form is this content represented? I argue that perception is widely compositional. The perceptual system represents many stimulus features (including shape, orientation, and motion) in terms of combinations of other features (such as shape parts, slant and tilt, common and residual motion vectors). But compositionality can take a variety of forms. The ways in which perceptual representations compose are markedly different from the ways in which sentences or (...) thoughts are thought to be composed. I suggest that the thesis that perception is compositional is not itself a concrete hypothesis with specific predictions; rather it affords a productive framework for developing and evaluating specific empirical hypotheses about the form and content of perceptual representations. The question is not just whether perception is compositional, but how. Answering this latter question can provide fundamental insights into perception. (shrink)

This paper aims to clear up the epistemology of learning morality from Artificial Moral Advisors (AMAs). We start with a brief consideration of what counts as moral enhancement and consider the risk of deskilling raised by machines that offer moral advice. We then shift focus to the epistemology of moral advice and show when and under what conditions moral advice can lead to enhancement. We argue that people’s motivational dispositions are enhanced by inspiring people to act morally, instead of merely (...) telling them how to act. Drawing upon these insights, we claim that if AMAs are to genuinely enhance people morally, they should be designed as inspiration and not authority machines. In the final section, we evaluate existing AMA models to shed light on which holds the most promise for helping to make users better moral agents. (shrink)

An ongoing philosophical discussion concerns how various types of mental states fall within broad representational genera—for example, whether perceptual states are “iconic” or “sentential,” “analog” or “digital,” and so on. Here, I examine the grounds for making much more specific claims about how mental states are structured from constituent parts. For example, the state I am in when I perceive the shape of a mountain ridge may have as constituent parts my representations of the shapes of each peak and saddle (...) of the ridge. More specific structural claims of this sort are a guide to how mental states fall within broader representational kinds. Moreover, these claims have significant implications of their own about semantic, functional, and epistemic features of our mental lives. But what are the conditions on a mental state's having one type of constituent structure rather than another? Drawing on explanatory strategies in vision science, I argue that, other things being equal, the constituent structure of a mental state determines what I call its distributional properties—namely, how mental states of that type can, cannot, or must co‐occur with other mental states in a given system. Distributional properties depend critically on and are informative about the underlying structures of mental states, they abstract in important ways from aspects of how mental states are processed, and they can yield significant insights into the variegation of psychological capacities. (shrink)

It is commonly assumed that images, whether in the world or in the head, do not have a privileged analysis into constituent parts. They are thought to lack the sort of syntactic structure necessary for representing complex contents and entering into sophisticated patterns of inference. I reject this assumption. “Image grammars” are models in computer vision that articulate systematic principles governing the form and content of images. These models are empirically credible and can be construed as literal grammars for images. (...) Images can have rich syntactic structure, though of a markedly different form than sentences in language. (shrink)

How much of what we see is imagined? Perception is a constructive process, supplementing the information available in sensory inputs to build representations of the world, as when one perceives a cat behind a chain-link fence as a whole, intact object, though it produces only a fragmented image on the eye. A recent movement in cognitive science and the philosophy of mind argues that mental imagery supplies much of the material for constructing perceptual representations—filling in the missing parts of the (...) cat, for instance. On this “Constitutive View” of imagery’s role in perception, perceptual representations routinely contain elements of mental imagery. This view rests on an expansive conception of what mental imagery is: roughly, imagery consists in perceptual processing that is not directly connected to sensory inputs. We challenge the Constitutive View. First, we argue that the expansive conception of imagery on which the view relies is problematic, for it fails to capture a unified psychological kind. We then consider whether phenomena such as perceptual completion, in which the occluded parts of the cat are “filled in,” support the Constitutive View. We argue that there is little explanatory utility in construing perceptual completion as a form of imagery. The constructive character of perception, we suggest, is best understood on its own terms, rather than by reference to imagery. (shrink)

Perception is a central means by which we come to represent and be aware of particulars in the world. I argue that an adequate account of perception must distinguish between what one perceives and what one's perceptual experience is of or about. Through capacities for visual completion, one can be visually aware of particular parts of a scene that one nevertheless does not see. Seeing corresponds to a basic, but not exhaustive, way in which one can be visually aware of (...) an item. I discuss how the relation between seeing and visual awareness should be explicated within a representational account of the mind. Visual awareness of an item involves a primitive kind of reference: one is visually aware of an item when one's visual perceptual state succeeds in referring to that particular item and functions to represent it accurately. Seeing, by contrast, requires more than successful visual reference. Seeing depends additionally on meta-semantic facts about how visual reference happens to be fixed. The notions of seeing and of visual reference are both indispensable to an account of perception, but they are to be characterized at different levels of representational explanation. (shrink)

As AI large language models (LLMs) become increasingly embedded in everyday technologies, should we be concerned about their capacity to influence human beliefs - particularly in the moral domain? Being persuaded because one is convinced by the LLM-generated reasons can support the moral and intellectual growth of users, while being persuaded because one defers to the LLM can prevent, or even reverse, growth and understanding. In three studies, we investigate whether and how people revise their moral judgments after receiving advice (...) from LLMs. In Study 1, we find that despite rating human advisors as more trustworthy, participants were equally persuaded by LLMs in everyday moral dilemmas. In Study 2, we used a methodologically realistic paradigm in which participants interacted with a genuine LLM, finding that the LLM’s past performance and judged trustworthiness did not have an effect on its persuasiveness in everyday moral dilemmas. In Study 3, participants interacted with an LLM that defended its moral recommendation with good reasons, no reasons, or bad (i.e., patently absurd) reasons. While high-quality reasons do not increase persuasion relative to no reasons, bad reasons may actively undermine it. Our findings suggest that users defer to the LLM on a response-by-response basis, not based on past performance or the presence of high-quality reasons alone. That people defer to AI moral advice, even if not blindly, raises concerns about the effects of AI moral advisors - a heuristic of “this advice seems good enough” is not the way we should approach moral advice. (shrink)

In the recent debate between conceptualists and nonconceptualists about perceptual content, Kant’s notion of intuition has been invoked on both sides. Conceptualists claim Kant as a forerunner of their position, arguing that Kantian intuitions have the same kind of content as conceptual thought. On the other hand, nonconceptualists claim Kant as a forerunner of their own position, contending that Kantian intuitions have a distinctly nonconceptual kind of content. In this paper, I argue first, that both sides are wrong about Kant, (...) secondly, that neither side can properly account for the epistemic function of intuition, and thirdly, that Kant’s own notion of intuition contains the resources for a third alternative. The epistemic function of an intuition for Kant is to furnish the sensory representation of an object of cognition. Conceptualism cannot account for this function because it construes perception as a species of thought. As a proper appreciation of Kant’s reasons for insisting upon the heterogeneity of thought and perception puts one in a position to see, any view that does this will fail to do justice to the distinctly sensory nature of intuition. Nonconceptualism, on the other hand, cannot account for the epistemic function of intuition because it views intuition as self-standing, and thus as completely independent from thought. As a consequence, nonconceptualism is not entitled to claim that an intuition is itself a cognitive state. I show that Kant’s actual view avoids both these extremes because it involves a different way of conceiving how perception is informed by conceptual thought. Building on this conception, Kant is able to preserve the distinctly sensory nature of intuition, while also securing proper cognitive standing for it. As a result, Kant’s notion of intuition provides the resources for an alternative account of how thought relates to the senses – one that avoids the shortcomings of the positions staked out in the contemporary debate. (shrink)

It is impossible to study philosophical methodology without being struck by the state of absolute chaos of the field’s methodological practices, methodological norms, and metaphilosophical beliefs. Not only are the methods of formal epistemology nothing like the methods of aesthetics, but even within specific debates and subfields, there are often significant disagreements about standards of proof, to say nothing about disagreements about the ultimate nature of the debate. The question facing metaphilosophers is whether this chaos is a feature or a (...) bug. Is the chaos a part of philosophy’s value as an incubator for new ideas or a sign that many philosophers have lost their way and are holding back philosophical progress? (shrink)

ABSTRACT Whether explicitly or implicitly, Kant's critical project weighs heavily upon Merleau-Ponty's Phenomenology of Perception. This article argues that we can understand Merleau-Ponty's text as a phenomenological rewriting of the Critique of Pure Reason from within the paradoxical structures of lived experience, effectively merging Kant's Transcendental Aesthetic and Transcendental Analytic. Although he was influenced by Husserl's and Heidegger's interpretations of Kant's first version of the Transcendental Deduction, Merleau-Ponty develops a unique position between Kant, Husserl, and Heidegger via an embodied and (...) lived synthesis that collapses Kant's distinction between sensibility and the understanding, and that makes sense of temporality and subjectivity as a paradoxical trajectory. (shrink)

A compositional theory of perceptual representations would explain how the accuracy conditions of a given type of perceptual state depend on the contents of constituent perceptual representations and the way those constituents are structurally related. Such a theory would offer a basic framework for understanding the nature, grounds, and epistemic significance of perception. But an adequate semantics of perceptual representations must accommodate the holistic nature of perception. In particular, perception is replete with context effects, in which the way one perceptually (...) represents one aspect of a scene (including the position, size, orientation, shape, color, motion, or even unity of an object) normally depends on how one represents many other aspects of the scene. The ability of existing accounts of the semantics of perception to analyze context effects is at best unclear. Context effects have even been thought to call into question the very feasibility of a systematic semantics of perception. After outlining a compositional semantics for a rudimentary set of percepts, I draw on empirical models from perceptual psychology to show how such a theory must be modified to analyze context effects. Context effects arise from substantive constraints on how perceptual representations can combine and from the different semantic roles that perceptual representations can have. I suggest that context effects are closely tied to the objectivity of perception. They arise from a perceptual grammar that functions to facilitate the composition of reliably accurate representations in an uncertain but structured world. (shrink)

The last two decades have seen the proliferation of the empirical study of philosophy. This dissertation defends the practice and argues that to understand the way contingent features of the practice of philosophy affect the epistemic standing of philosophers, we need to draw upon a wider and more varied set of empirical data than is sometimes supposed. To explore this, the dissertation focuses on two places where the practices of the discipline of philosophy have an effect on the epistemology of (...) philosophy. -/- First, the dissertation discusses the interaction between notable works of philosophy and their readers. In particular, it critiques the method of defending the epistemic standing of philosophers through careful examination of notable works of philosophy to discern the methods in the text. Ultimately this method is epistemically unmotivated. It is instead far more important to study how people have interacted and reacted to works of philosophy. -/- Second, the dissertation defends the use of lexicography in philosophy. Using "intuition" as a case study, the dissertation argues metasemantically and lexicographically that philosophers often use common words with meanings unique to philosophy. -/- Through both discussions it is argued that experimental philosophers and epistemologists of philosophy need to drastically expand the sorts of data they collect and consider in their theorizing. -/- ​. (shrink)

From his initial writings on imagination and memory, to his recent studies of the glance and the edge, the work of American philosopher Edward S. Casey continues to shape 20th-century philosophy. In this first study dedicated to his rich body of work, distinguished scholars from philosophy, urban studies and architecture as well as artists engage with Casey's research and ideas to explore the key themes and variations of his contribution to the humanities. -/- Structured into three major parts, the volume (...) reflects the central concerns of Casey's writings: an evolving phenomenology of imagination, memory, and place; representation and landscape painting and art; and edges, glances, and voice. Each part begins with an extended interview that defines and explains the topics, concepts, and stakes of each of area of research. Readers are thus offered an introduction to Casey’s fascinating body of work, and will gain a new insight into particular aspects and applications of Casey's research. -/- With a complete bibliography and an introduction that at once stresses each of Casey’s areas of research while putting into perspective their overarching themes, this authoritative volume identifies the overall coherence and interconnections of Edward S. Casey's work and his impact in contemporary thought. (shrink)

According to a prevailing view, conceptual engineering introduces a revolutionary philosophical methodology, challenging traditional conceptual analysis. However, in our paper, we argue that closer scrutiny reveals not only the falsity but also the inherent ambiguity of this narrative. We explore four interpretations of the "Anti-Novelty Claim", the claim that conceptual engineering is not a new way of doing philosophy. Discussing the Anti-Novelty Claim from the perspective of a text’s producer, the text’s consumers, and the exegetical potential of the text, we (...) examine each perspective’s metaphilosophical implications and demonstrate that taking each perspective requires different methods. Adopting these different methods, we argue that the different interpretations of the Anti-Novelty Claim range from nearly trivially true to unlikely but untested. Importantly, we emphasize that each interpretation offers unique philosophical insights, yet addressing them requires diverse types of evidence, preventing a singular, straightforward answer to whether conceptual engineering is new. (shrink)

L’article introduit au rôle de l’efficience dans la génération d’avantages ou de désavantages enregistrés par les minorités. L’objectif est de démontrer que l’efficience devrait jouer un rôle plus important dans le domaine de la justice ethnoculturelle. Pour ce faire, une brève présentation de la place du nombre dans la littérature sur le sujet est offerte, ce qui permet de saisir le fond de l’argument consistant à faire des déséquilibres numériques une source certaine des injustices subies par les minorités, notamment dans (...) une perspective inspirée par l’égalitarisme de la chance. De ce point de vue, l’asymétrie numérique peut toutefois constituer une source d’avantages pour ces groupes. Dès lors, une telle asymétrie, qui est l’un des constituants de la définition de la minorité, prend une autre dimension. Plus que cette asymétrie, il apparaît que c’est l’efficience (la manière dont les groupes gèrent cette asymétrie) qui détermine les conditions et succès matériels des membres d’un groupe donné. Après une discussion des minorités efficientes et dominantes, l’article se conclut par la mise en lumière de quelques pistes de recherche rendues visibles par l’efficience et qui sont pertinentes pour la théorie de la justice en contexte multiculturel. (shrink)

Cet article évalue, du point de vue moral, les justifications possibles pour le recours à la taxation en vue de promouvoir des comportements « sains ». L’objectif est de démontrer qu’un tel instrument recevrait une meilleure justification, c’est-à-dire plus en accord avec des principes égalitariens respectueux de la liberté individuelle, s’ils s’inscrivaient dans une logique de mutualisation. Pour ce faire, les arguments du bien-être individuel et de l’efficience sociale sont discutés afin d’en pointer les fécondités et limites. Au travers de (...) leurs limites, ces arguments introduisent naturellement à une troisième manière d’appréhender le problème, sous l’angle de la mutualisation. Ce principe représente moins une remise en cause radicale des arguments précédents qu’une reformulation du recours à l’efficience sociale et une limitation du champ d’application des appels au bien-être individuel. Il repose sur deux idées. La première est que la référence à une notion de responsabilité, même affadie, est nécessaire. De plus, celle-ci doit être conçue comme partagée entre producteurs et consommateurs ainsi que limitée au domaine financier. La seconde est que la mutualisation ne peut être déconnectée d’intuitions égalitariennes formulées de manière générale. (shrink)

This book is the culmination of the COST Action CA15212 Citizen Science to Promote Creativity, Scientific Literacy, and Innovation throughout Europe. It represents the final stage of a shared journey taken over the last 4 years. During this relatively short period, our citizen science practices and perspectives have rapidly evolved. In this chapter we discuss what we have learnt about the recent past of citizen science and what we expect and hope for the future.

When interpreting the meanings of visual features in information visualizations, observers have expectations about how visual features map onto concepts (inferred mappings.) In this study, we examined whether aspects of inferred mappings that have been previously identified for colormap data visualizations generalize to a different type of visualization, Venn diagrams. Venn diagrams offer an interesting test case because empirical evidence about the nature of inferred mappings for colormaps suggests that established conventions for Venn diagrams are counterintuitive. Venn diagrams represent classes (...) using overlapping circles and express logical relationships between those classes by shading out regions to encode the concept of non-existence, or none. We propose that people do not simply expect shading to signify non-existence, but rather they expect regions that appear as holes to signify non-existence (the hole hypothesis.) The appearance of a hole depends on perceptual properties in the diagram in relation to its background. Across three experiments, results supported the hole hypothesis, underscoring the importance of configural processing for interpreting the meanings of visual features in information visualizations. (shrink)

Actors, undercover investigators, and readers of fiction sometimes report “losing themselves” in the characters they imitate or read about. They speak of “taking on” or “assuming” the beliefs, thoughts, and feelings of someone else. I offer an account of this strange but familiar phenomenon—what I call imaginative transportation.

In Southeast Asian countries (SEA), road transport accounts for the main energy consumption and CO2 emission. Air pollution is a major concern in densely populated cities such as Bangkok, Manila, and Kuala Lumpur. The main objective of this paper is to give insights on trends of transport development, car ownership, and CO2 emissions in Southeast Asia. This study also attempts to review the successful transportation policies around the globe and to introduce the possible instruments that can help reduce (...) air pollution in Southeast Asian countries. Economic instruments to estimate the benefits of a cleaner environment due to new policies are introduced as well. The results of this research could help policy makers consider approaches that could internalize external costs of transportation and maximize the societal welfare. (shrink)

We all know that problems of transportation and allocation appear frequently in practical life. We need to transfer materials from production centers to consumption centers to secure the areas’ need for the transported material or allocate machines or people to do a specific job at the lowest cost, or in the shortest time. We know that the cost factors Time is one of the most important factors that decision-makers care about because it plays an “important” role in many of the (...) practical and scientific issues that we face in our daily lives, and we need careful study to enable us to avoid losses. For this, the linear programming method was used, which is one of the research methods. Processes, where the problem data is converted into a linear mathematical model for which the optimal solution achieves the desired goal. Since these models are linear models, we can solve them using the direct simplex method and its modifications, but the specificity that these models enjoy has enabled scholars and researchers to find special methods that help us in obtaining the optimal solution. Whatever the method used, the goal is to determine the number of units transferred from any material from production centers to consumption centers, or to allocate a machine or person to do a job so that the cost or time is as short as possible. These issues were addressed according to classical logic, but the ideal solution was a specific value appropriate to the conditions in which the data was collected and does not take into account the changes that may occur in the work environment. In order to obtain results that are more accurate and enjoy a margin of freedom, we present in this book a study of transport issues and neutrosophic allocation issues and some methods for solving them. By neutrosophic issues we mean These are the problems in which the data are neutrosophic values, i.e. the required quantities and the available quantities. (shrink)

The essential biological processes that sustain life are catalyzed by protein nano-engines, which maintain living systems in far-from-equilibrium ordered states. To investigate energetic processes in proteins, we have analyzed the system of generalized Davydov equations that govern the quantum dynamics of multiple amide I exciton quanta propagating along the hydrogen-bonded peptide groups in α-helices. Computational simulations have confirmed the generation of moving Davydov solitons by applied pulses of amide I energy for protein α-helices of varying length. The stability and mobility (...) of these solitons depended on the uniformity of dipole-dipole coupling between amide I oscillators, and the isotropy of the exciton-phonon interaction. Davydov solitons were also able to quantum tunnel through massive barriers, or to quantum interfere at collision sites. The results presented here support a nontrivial role of quantum effects in biological systems that lies beyond the mechanistic support of covalent bonds as binding agents of macromolecular structures. Quantum tunneling and interference of Davydov solitons provide catalytically active macromolecular protein complexes with a physical mechanism allowing highly efficient transport, delivery, and utilization of free energy, besides the evolutionary mandate of biological order that supports the existence of such genuine quantum phenomena, and may indeed demarcate the quantum boundaries of life. (shrink)

TRANSPORTE DE GAMETAS, FERTILIZAÇÃO E SEGMENTAÇÃO • _____OBJETIVO O entendimento do desenvolvimento embrionário nos estágios iniciais, desde a deposição dos espermatozoides na fêmea, passando pela fertilização deste no ovócito e na formação do zigoto, é de suma importância para diferenciar especialistas em reprodução e manejo reprodutivo no mercado de trabalho e, também, durante a vida acadêmica. Compreender os processos que levam à formação do zigoto na fêmea é essencial para avaliar a capacidade reprodutiva dos animais e, mediante técnicas, avaliar o (...) trato reprodutivo da fêmea e o desenvolvimento do embrião até a formação do feto e, por fim, em um novo animal sadio na propriedade. Com esse trabalho, o estudante de veterinária ou zootecnia, que deseja se aprofundar na fisiologia da reprodução animal, identificará os mecanismos que são envolvidos no transporte dos gametas, bem como os processos que estes últimos devem completar para alcançar a fertilização e para desencadear as divisões iniciais do embrião. • _____INTRODUÇÃO A fertilização ou fecundação é o processo pelo qual os gametas masculino (espermatozoide) e feminino (ovócito) se fundem para gerar um novo indivíduo. Seu êxito depende da culminação adequada dos diferentes processos que devem sofrer os gametas durante sua maduração e percurso; do transporte oportuno destes no trato reprodutivo da fêmea, assim como de uma série de adaptações dos órgãos genitais internos da mãe. A segmentação refere-se às primeiras divisões celulares do embrião. • _____TRANSPORTE DO OVÓCITO O ovócito que é liberado na ovulação, e que se encontra coberto pelas células do cumulus (figura 1), é capturado pela fímbria do infundíbulo ao aderir aos cílios. Esse processo é altamente eficaz, inclusive em espécies onde os ovários possuem várias formações globosas, por exemplo nas porcas, onde os ovidutos capturam entre 95 e 100% dos ovócitos que são ovulados. As contrações das camadas musculares do oviduto e o movimento intenso dos cílios da mucosa faz com que as secreções fluam em direção ao útero, transportando assim o complexo cumulus-ovócito. Esse transporte é relativamente rápido até alcançar a junção da ampola com o istmo (que é considerado o local de fertilização do espermatozoide e ovócito) a partir do qual se torna lento. Devido a fêmea estar em estro, o processo está sob controle endócrino, isto é, controle hormonal através do estradiol. Nas fêmeas domésticas, ao contrário das mulheres, o transporte ao longo do oviduto é extremamente eficiente, pois os embriões passam para o útero sem dificuldade, de modo que gestações ectópicas (tubárias ou em cavidade) são quase inexistentes. A égua, frequentemente, retém por muito tempo os ovócitos não fertilizados no oviduto, provavelmente devido a não secreção de substâncias (como a prostaglandina E) que poderiam favorecer sua passagem, como se propõe que aconteça com os embriões. A figura 2 apresenta um ovócito com suas respectivas estruturas. Figura 1: ovócitos de uma vaca madurados in vitro. Nota-se as células do cumulus que os recobre. Figura 2: estruturas do ovócito de uma ovelha que se encontra na etapa de ovócito secundário, depois da ovulação. Elaborado pelo autor. • _____TRANSPORTE ESPERMÁTICO Para que os espermatozoides sejam capazes de fertilizar o ovócito, deverão sofrer uma série de mudanças bioquímicas e morfológicas ao longo de sua passagem pelo aparelho reprodutor tanto masculino como feminino. Uma vez produzidos na parede do túbulo seminífero, os espermatozoides são liberados em direção ao lúmen tubular e transportados passivamente para uma estrutura ramificada conhecida como rede testicular (rete testis). Dessa rede são conduzidos em direção ao epidídimo passando através de 10 a 20 ductos eferentes localizados no polo superior do testículo. O epidídimo é dividido em três seções denominadas cabeça, corpo e cauda; é constituído por um só ducto longo e tortuoso que continua com o canal deferente. Ao final desemboca nas ampolas seminais, no ducto ejaculatório e na uretra. As funções do epidídimo são as de maduração, transporte e armazenamento dos espermatozoides. O transporte através do epidídimo é lento, aproximadamente de 10 dias em touros, e segue sendo passivo. Os espermatozoides tomados da cabeça do epidídimo são ainda imaturos e incapazes de fertilizar, enquanto os armazenados na cauda são completamente maduros. Durante o trânsito pelo epidídimo os espermatozoides adquirem motilidade e o potencial para fertilizar, o acrossomo é remodelado e a gota citoplasmática migra para o flagelo e é liberada. Quando um macho ejacula com muita frequência, é possível observar espermatozoides com gota citoplasmática no sêmen, já que não há tempo suficiente para que completem sua maduração. Os espermatozoides são expulsados fora do organismo durante a cópula, na masturbação ou em emissões espontâneas. Na ejaculação, os espermatozoides que se encontram suspensos nos fluidos do testículo e do epidídimo, misturam-se ao chegar na uretra com as secreções das glândulas acessórias para formar o sêmen. Essas secreções denominadas plasma seminal, proporcionam substâncias para manter o metabolismo energético das células espermáticas, e integram suas membranas elementos que impedem uma capacitação prematura. Durante a cópula, o sêmen é depositado na vagina ou no útero, variando entre as espécies (tabela 1). Na monta natural, geralmente, o serviço ocorre no momento propício, já que está definido pela fase do ciclo estral em que a fêmea é receptiva ao macho. No entanto, na inseminação artificial, é o macho que deverá determinar o momento ideal, e para isso é importante considerar a vida média dos gametas, ao qual é muito curta no caso dos ovócitos (tabela 1). Tabela 1: local de depósito do sêmen, volume da ejaculação e vida média dos gametas. Espécie Local de deposição Volume (ml) Velocidade de ejaculação Vida média do ovócito Vida média do espermatozoide Bovinos Intravaginal 2 1 – 3 seg 8 h 30 – 48 h Caninos Intravaginal 2 – 30 (10 média) 6 – 45 min 48 – 72 h 9 – 11 d Equinos Intrauterina 50 – 200 20 – 60 seg 6 – 8 h 72 – 120 h Humanos Intravaginal 3 - - 5 – 6 d Ovinos Intravaginal 1 1 – 2 seg 16 – 24 h 30 – 48 h Suínos Intrauterina 200 – 400 5 – 20 min 8 – 10 h 24 – 48 h Onde d = dias; h = horas. A vida fértil do ovócito é muito curta, portanto, o momento do serviço é de grande importância para obter altos índices de fertilização. Independentemente do local em que os espermatozoides sejam depositados no aparelho reprodutor feminino, serão expostos às secreções genitais e sofrem uma série de mudanças em seu trajeto até o local de fertilização antes de penetrar no ovócito. Nas espécies em que o sêmen é depositado na parte cranial da vagina, uma parte do mesmo penetra através da cérvix, enquanto outra parte é eliminada do aparelho genital da fêmea, em pouco tempo, através do fluxo retrógrado. O meio vaginal não é adequado e imobiliza os espermatozoides em pouco tempo, pelo qual deverão entrar no útero onde o ambiente é mais propício. O transporte espermático na fêmea é o resultado da alta contratilidade, do movimento ciliar e o fluido do aparelho genital durante o estro, ao qual está sob controle endócrino e do sistema nervoso. Esse transporte é favorecido pelas características especiais do muco estral, cujas moléculas formam uma espécie de canais que facilitam a passagem dos espermatozoides. Pelo contrário, durante a fase lútea seu transporte é dificultado. Além do meio vaginal, a cérvix também atua como barreira natural para limitar a passagem dos espermatozoides, diminuindo assim a possibilidade de polispermia. Funciona, também, como um filtro que seleciona os espermatozoides aptos dos que não o são, uma vez que somente os primeiros possuem uma motilidade vigorosa que lhes permite passar pelo muco altamente hidratado. Na vaca a cérvix é considerada como um reservatório espermático. Quando atravessam a cérvix, os espermatozoides seguem sua deslocação tanto por movimento próprio como pelas contrações uterinas e tubárias. Nas espécies em que o local de depósito do sêmen do macho na fêmea é intrauterino, como equinos, a principal barreira que os espermatozoides enfrentam é a união ou junção útero-tubárica. A união entre o útero e o oviduto (istmo do oviduto) serve como reservatório funcional dos espermatozoides nas espécies domésticas. Poucos minutos depois da cópula, é possível encontrar alguns espermatozoides no oviduto, que é conhecido como fase de transporte rápido. No entanto, esses espermato-zoides não são os que participam do processo de fertilização e podem apresentar certas anormalidades. Existe um segundo tipo de transporte denominado fase sustentada, a qual consiste na migração prolongada dos espermatozoides em direção as partes mais craniais do aparelho genital feminino, que conduzem à colonização do reservatório funcional e na liberação gradual dos espermatozoides dos reservatórios espermáticos, incluindo este último. O reservatório do istmo fornece aos espermatozoides um ambiente propício, protegendo-os contra a fagocitose, prolongando assim a sua viabilidade. Aqui os esper-matozoides permanecem aderidos a superfície das células ciliadas do epitélio até a finalização de sua capacitação, depois da qual são liberados quando alteram seu padrão de motilidade flagelada, fenômeno conhecido como hipermotilidade, e migram em ondas em direção ao local da fertilização. Dos milhões de espermatozoides ejaculados, somente alguns milhares alcançarão o istmo do oviduto e um número sumamente pequeno será encontrado nas imediações do ovócito no momento da fertilização. • _____CAPACITAÇÃO ESPERMÁTICA E REAÇÃO ACROSSÔMICA A capacitação é um processo gradual e essencial para a fertilização. Os espermato-zoides devem passar por um dado tempo de “incubação” no aparelho genital da fêmea e sofrer uma série de mudanças antes de serem capazes de fecundar o ovócito. A capacita-ção dos espermatozoides começa quando eles entram em contato com as secreções do aparelho genital da fêmea e termina no istmo do oviduto. Durante esse percurso a superfície da cabeça do espermatozoide se modifica já que algumas moléculas como o colesterol são removidas da membrana plasmática, aumentando sua fluidez e alterando suas propriedades bioquímicas. Entre outras coisas, essa reorganização dos lipídios facilita a entrada de cálcio extracelular pelos canais iônicos e ocasiona a desestabilização da membrana, tornando-a mais fusogênica. Também são eliminados outros fatores (conhecidos genericamente como fatores descapacitantes) que expõem receptores membranais indispensáveis para a realização da união entre o espermatozoide e o ovócito durante a fertilização. Os espermatozoides capacitados apresentam um padrão de hipermotilidade e uma maior atividade metabólica, características que devem obter para que sejam capazes de penetrar as camadas do ovócito. A capacitação é necessária para que ocorra a reação acrossômica. A reação acrossomal ou acrossômica (RA) é um fenômeno de exocitose que é desencadeada pela ligação entre as proteínas e receptores localizados na membrana do espermatozoide e a zona pelúcida do ovócito (figura 3). Envolve a fusão da membrana plasmática do espermatozoide com a membrana externa de seu acrossomo; formando, assim, pequenas vesículas, cujo conteúdo de enzimas hidrolíticas, como a hialuronidase e a acrosina, é liberado em direção ao seu exterior, facilitando a penetração da zona pelúcida. A adesão do espermatozoide à zona pelúcida é específica da espécie e depende de glicoproteínas presentes na membrana dos ovócitos maduros; a cabeça do espermatozoide se une com essas glicoproteínas mediante receptores específicos e atravessam em direção oblíqua a zona pelúcida até chegar ao espaço perivitelino. Nos mamíferos, particularmente em roedores e nos humanos, algumas dessas glicoproteínas são conhecidas como ZP1, ZP2 e ZP3. Pensa-se que a união da membrana espermática a esta última é o que desencadeia a reação acrossomal. Posteriormente, as vilosidades do ovócito entram em contato com o espermatozoide e a membrana presente na secreção equatorial da cabeça do espermatozoide, que tem proteínas fusogênicas específicas, une-se a membrana plasmática do ovócito, fusionando-se e permitindo a entrada do núcleo espermático ao citoplasma (figura 4). A capacitação dos espermatozoides é fundamental para o êxito da fertilização, uma vez que apenas os aptos estarão perfeitos e íntegros para que a união e percepção das glicoproteínas presentes nos mesmos possam ocorrer de forma ideal para a penetração deste no ovócito, fertilizá-lo e formar um zigoto. Figura 3: estrutura do espermatozoide. Nota: a membrana é acrossomal e não acrossonal. Elaborado pelo autor. Figura 4: eventos que ocorrem durante a fertilização. A – depois de passar através das células do cumulus, o espermatozoide entra em contato com a zona pelúcida, onde receptores da membrana plasmática reconhecem as proteínas da zona pelúcida; B – é desencadeada, então, a reação acrossomal; C – para que o espermatozoide penetre na zona pelúcida; D – ao atravessar a zona pelúcida e entrar no espaço perivitelino, a cabeça do espermatozoide entra em contato com a membrana vitelina; ambas membranas se fusionam graças ao reconhecimento de proteínas fusogênicas que estão no segmento equatorial. E – ocorre, então, que o núcleo do espermatozoide penetra no citoplasma do ovócito; uma das consequências da fusão da membrana com a cabeça do espermatozoide é a reação cortical, em que os grânulos corticais do ovócito liberam seu conteúdo em direção ao espaço perivitelino, o que resulta na alteração da estrutura da zona pelúcida e da membrana vitelina para bloquear a polispermia. Elaborado pelo autor. • _____CONSEQUÊNCIAS DA PENETRAÇÃO Bloqueio da polispermia A fusão das membranas dos gametas durante a penetração permite a entrada da fosfolipase C zeta (PLCζ) – fator solúvel que provém do espermatozoide – que desencadeia liberação e oscilações de Ca2+ no retículo endoplasmático. Isso, por sua vez, provoca a migração e fusão dos grânulos corticais, com a consequente liberação de enzimas, que mudam tanto a estrutura da zona pelúcida (por exemplo a inativação de ZP3), como a da membrana vitelina. Desse modo, impede-se que outros espermatozoides as penetrem, evitando assim a polispermia (figura 5). Figura 5: os grânulos corticais que encontram-se na periferia do citoplasma, debaixo da superfície da membrana do ovócito, migram e fusionam-se sobre a mesma, liberando seu conteúdo no espaço perivitelino imediatamente depois da penetração do espermatozoide. A – como conse-quência, tanto a membrana vitelina como a zona pelúcida são modificadas, impedindo a entrada de mais espermatozoides, o que evita a polispermia. B – o ovócito retoma, então, sua segunda divisão meiótica, que ocasiona a expulsão do segundo corpúsculo polar, e na formação dos pronúcleos feminino e masculino. C – continuando, os pronúcleos migram, suas membranas se dissolvem e os cromossomos de ambos se condensam e se unem. Completa-se, assim, a singamia e forma-se, então, o zigoto. Elaborado pelo autor baseado nos livros de embriologia e fisiologia da reprodução conforme vida bibliografia. Ativação do ovócito e formação de pronúcleos Na maioria das fêmeas domésticas, com exceção da cadela, o ovócito encontra-se suspenso na metáfase II da segunda meiose no momento da ovulação. A entrada da PLCζ do espermatozoide no citoplasma do ovócito, e a consequente liberação de Ca2+, faz com que o ovócito se ative, terminando a segunda divisão meiótica e expulse o segundo corpo polar. Posteriormente, o material nuclear do ovócito se reorganiza para formar o pronú-cleo feminino. Entretanto, a membrana nuclear do espermatozoide se dissolve, a cromatina descondensa-se, as protaminas são substituídas por histonas, e se forma uma nova membrana nuclear, dando lugar ao pronúcleo masculino. Singamia Uma vez que os pronúcleos feminino e masculino são formados, migram para o centro do ovócito, aproximam-se, suas membranas se dispersam e os cromossomos paternos e maternos se associam, com o qual recupera a condição diploide e dá origem ao zigoto (figura 5). • _____DESENVOLVIMENTO EMBRIONÁRIO Poucas horas após a fertilização ocorre a primeira divisão do zigoto em duas, depois em 4, 8, 16 e 32 células, denominadas blastômeros. Essas divisões mitóticas são conhecidas como divisões de segmentação ou clivagem (figura 6), uma vez que são realizadas sem aumento do citoplasma, de modo que com cada divisão os blastômeros se tornam menores. A partir das 16 células o embrião se chama mórula, e é visto como uma massa celular compacta. A compactação deve-se a informação de proteínas de ligação entre os blastômeros. O embrião acumula líquido em seu interior, formando uma cavidade denominada blastocele. Esse processo é conhecido como blastulação; o embrião, assim, passa a ser chamado de blastocisto. Nessa etapa é possível diferenciar duas populações de células embrionárias: a massa celular interna, embrioblasto ou botão embrionário (que dará origem ao embrião), e a massa celular externa, células superficiais ou trofoblasto, do qual se originam a maioria das membranas fetais. Ao continuar a multiplicação das células e a acumulação de líquido, o blastocisto aumenta de tamanho, convertendo-se em blastocisto expandido. A zona pelúcida torna-se mais fina e, finalmente, o embrião eclode; isto é, o embrião é liberado da zona pelúcida. • _____FERTILIZAÇÕES ATÍPICAS Polispermia É a penetração de dois ou mais espermatozoides no óvulo. Esta condição é letal nos mamíferos, já que o número cromossômico desse zigoto é maior que 2n, o envelheci-mento do ovócito da porca, como consequência do serviço tardio, favorece a apresentação da polispermia, por isso, é comum ver números de nascimentos de média de 10 a 12 leitões por parição nessa espécie. Nas aves, no entanto, a penetração de mais de um espermatozoide é normal, embora apenas um pronúcleo masculino se formará, fundindo-se com o feminino. Figura 6: etapas do processo de segmentação/clivagem. Fonte: aula de reprodução da professora Domenica Palomaris, UFT. Ginogênese É o desenvolvimento de um embrião a partir de um óvulo normal fecundado por um espermatozoide, mas sem a fusão dos cromossomos masculinos com os da fêmea. A função do espermatozoide, nesse caso, é a de ativação do ovócito para que este inicie seu desenvolvimento, mas não há fusão com o núcleo do espermatozoide. Ocorre em plantas, em nematódeos e em algumas espécies de peixes, por exemplo a Poecilia formosa, espécie em que os ovócitos das fêmeas são ativados por machos de outra espécie relacio-nada. Partenogênese Consiste no desenvolvimento do embrião sem a participação do espermatozoide. Ocorre em alguns insetos, o zangão, por exemplo, é partenogenético. Também pode apresentar-se em perus, cujos embriões são machos e, geralmente, morrem antes da eclosão. • _____GÊMEOS Existem dois tipos de gêmeos: idênticos ou monozigóticos e os não idênticos ou dizigóticos. Idênticos ou monozigóticos Originam-se do mesmo zigoto, sendo assim, possuem o mesmo genótipo e um fenótipo similar e, portanto, são do mesmo sexo. Em laboratório é possível gerá-los ao seccionar uma mórula em duas ou mais partes, por meio de um micromanipulador. Uma vez que possuem o mesmo genótipo, os produtos resultantes são clones. Não idênticos ou dizigóticos Provêm da fertilização de dois óvulos distintos por espermatozoides diferentes. Possuem, portanto, genótipos e fenótipos diferentes, e podem ser de sexo diferente. REFERÊNCIAS BIBLIOGRÁFICAS ALBERTS, Bruce et al. Biologia molecular da célula. Artmed Editora, 2010. AUSTIN, Colin Russell; SHORT, Roger Valentine. Reproduction in Mammals, Book I: Germ Cells and Fertilization. 1982. BEARDEN, Henry Joe et al. Reproducción animal aplicada. México: Manual Moderno, 1982. BOSCH, P.; WRIGHT JR, R. W. The oviductal sperm reservoir in domestic mammals. Archivos de medicina veterinaria, v. 37, n. 2, p. 95-105, 2005. CAPALLEJAS, Roberto Brito; RODRÍGUEZ, Lourdes Tagle. Fisiología de la reproducción animal: con elementos de biotecnología. Editorial Félix Varela, 2010. CROXATTO, Horacio B. Physiology of gamete and embryo transport through the fallopian tube. Reproductive biomedicine online, v. 4, n. 2, p. 160-169, 2002. CUPPS, Perry T. (Ed.). Reproduction in domestic animals. Elsevier, 1991. DIEDRICH, Smidt et al. Endocrinología y Fisiología de la Reproducción de los Animales Zootécnicos. 1972. DUKES, Henry Hugh; SWENSON, Melvin J.; REECE, William O. Dukes fisiologia dos animais domésticos. Editora Guanabara Koogan, 1996. FERREIRA, A. de M. Reprodução da fêmea bovina: fisiologia aplicada e problemas mais comuns (causas e tratamentos). Juiz de Fora: Minas Gerais–Brasil, p. 422, 2010. HAFEZ, Elsayed Saad Eldin; HAFEZ, Bahaa. Reprodução animal. São Paulo: Manole, 2004. HUNTER, Ronald Henry Fraser. The Fallopian tubes in domestic mammals: how vital is their physiological activity?. Reproduction Nutrition Development, v. 45, n. 3, p. 281-290, 2005. HUNTER, R. H. F.; RODRIGUEZ‐MARTINEZ, H. Capacitation of mammalian spermatozoa in vivo, with a specific focus on events in the Fallopian tubes. Molecular Reproduction and Development: Incorporating Gamete Research, v. 67, n. 2, p. 243-250, 2004. GALINA, Carlos; VALENCIA, Javier. Reproducción de los animales domésticos. 2006. HOPPER, Richard M. (Ed.). Bovine reproduction. John Wiley & Sons, 2014. HYTTEL, Poul; SINOWATZ, Fred; VEJLSTED, Morten. Embriologia veterinária. Elsevier Brasil, 2012. KÖLLE, Sabine; REESE, Sven; KUMMER, Wolfgang. New aspects of gamete transport, fertilization, and embryonic development in the oviduct gained by means of live cell imaging. Theriogenology, v. 73, n. 6, p. 786-795, 2010. MCKINNON, Angus O. et al. (Ed.). Equine reproduction. John Wiley & Sons, 2011. OLIVERA, Martha et al. El espermatozoide, desde la eyaculación hasta la fertilización. Revista Colombiana de Ciencias Pecuarias, v. 19, n. 4, p. 426-436, 2006. PLANT, Tony M.; ZELEZNIK, Anthony J. (Ed.). Knobil and Neill's physiology of reproduction. New York: Academic Press, 2014. RODRIGUEZ-MARTINEZ, Heriberto. Role of the oviduct in sperm capacitation. Theriogenology, v. 68, p. S138-S146, 2007. SAAVEDRA LEOS, María Dolores. Estudio de la composición de los gránulos corticales y del oolema de ovocitos porcinos y bovinos madurados y fecundados in vitro. Proyecto de investigación:, 2010. SENGER, Phillip L. et al. Pathways to pregnancy and parturition. Current Conceptions, Inc, 2004. SUAREZ, Susan S. The oviductal sperm reservoir in mammals: mechanisms of formation. Biology of Reproduction, v. 58, n. 5, p. 1105-1107, 1998. VALENCIA MÉNDEZ, Javier de J. Fisiología de la reproducción porcina. 1986. FIXAÇÃO DO ASSUNTO 1. Defina e diferencie fertilização e segmentação. 2. Disserte sobre o transporte do ovócito. Por que no istmo o transporte do ovócito se torna lento? 3. Fale sobre a eficiência do transporte do gameta no trato genital da fêmea e sobre a retenção de ovócitos pela égua. 4. Defina as células do cumulus e explique seu papel sobre o ovócito. 5. Quais as estruturas que compõem o ovócito? Qual a função de cada uma? 6. Todos os ovócitos das fêmeas domésticas são iguais? Justifique. 7. Disserte sobre o papel dos hormônios e das secreções sobre o transporte do ovócito no trato genital da fêmea. 8. Disserte sobre o transporte do espermatozoide. Por que há transporte rápido e lento dos espermatozoides? 9. Fale sobre o local de deposição do sêmen nas espécies domésticas e como esse influen-cia na eficiência da reprodução. 10. Por que a vida média do espermatozoide canino é maior que as outras espécies? 11. Quais as mudanças que os espermatozoides precisam sofrer para conseguir êxito na fertilização e por quê? 12. Defina fase de transporte rápido, fase sustentada e hipermotilidade. Qual a importân-cia de cada um? 13. Como ocorre a reação acrossômica? 14. O que é polispermia e como ocorre seu bloqueio? 15. Como ocorre a ativação do ovócito e como se formam os pronúcleos? 16. O que é e qual a importância da singamia? 17. Disserte sobre as divisões de segmentação e qual a importância destas para o êxito da reprodução. 18. Defina e diferencia mórula e blastocisto. 19. Defina e diferencie ginogênese e partenogênese. 20. Qual o papel endócrino e quais hormônios e enzimas atuam sobre o transporte de gametas, sobre a fertilização e sobre a segmentação? (shrink)

Informed by his experiences as a hunter, forester, wildlife manager, ecologist, conservationist, and professor, Aldo Leopold developed a view he called the land ethic. In a classic essay, published posthumously in A Sand County Almanac, Leopold advocated for an expansion of our ethical obligations beyond the purely human to include what he variously termed the “land community” or the “biotic community”—communities of interdependent humans, nonhuman animals, plants, soils, and waters, understood collectively. This philosophy has been extremely influential in (...) environmental ethics as well as conservation biology and related fields. Using an approach grounded in environmental ethics and the history and philosophy of science, Roberta L. Millstein reexamines Leopold’s land ethic in light of contemporary ecology. Despite the enormous influence of the land ethic, it has sometimes been dismissed as either empirically out of date or ethically flawed. Millstein argues that these dismissals are based on problematic readings of Leopold’s ideas. In this book, she provides new interpretations of the central concepts underlying the land ethic: interdependence, land community, and land health. She also offers a fresh take on of his argument for extending our ethics to include land communities as well as Leopold-inspired guidelines for how the land ethic can steer conservation and restoration policy. (shrink)