Natural Capitalism is an economic approach developed by Paul Hawken, Amory Lovins, and Hunter Lovins that aims to protect the environment and improve profits. It proposes using more efficient production techniques, biomimicry of nature's closed-loop cycles, and focusing on providing services rather than goods to increase resource productivity. The key idea is that a healthy environment is necessary to support a strong economy, so businesses must account for impacts on natural capital like ecosystems.