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Biodiversity

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Biodiversity refers to the variety of life in the world or in a particular habitat or ecosystem. It is necessary for life to thrive on Earth.

Aldo Leopold, one of the great thinkers of conservation, observed more than half a century ago the importance of protecting species. "To keep every cog and wheel is the first precaution of intelligent tinkering," he wrote. Losing species is like throwing away one by one the engine parts of an airplane while flying.

Biodiversity is a major initiative of Conservation International.

Biodiversity conservation provides substantial benefits to meet immediate human needs, such as those for clean, consistent water flows; protection from floods and storms; and a stable climate. 

Curated by mokiethecat

Vanishing Birds of North America
January 30, 2026

North America has lost an estimated 3 billion birds since 1970 due to the extinction crisis. The Center for Biological Diversity, a 501c3 nonprofit based in Tucson, Arizona, works to secure a future for all species. Believing human welfare is deeply linked to nature's diversity, we use science, law, and creative media to protect the lands, waters, and climate essential for survival.

Learn more and connect with us: Visit our website at biologicaldiversity.org, or find us on social media (Twitter, Facebook, Instagram, TikTok). For questions or media inquiries, email center@biologicaldiversity.org. Take action at biologicaldiversity.org/action/alerts.