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We're entering the Earth's sixth era of extinction -- and it's the first time humans are to blame. CNN introduces you to the key species and people...

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

Thule, Greenland, also called Qaanaaqis, one of the northernmost towns in the world. As the climate warms and the ice caps begin to melt, the gentle...

Wars of the future will be fought over water as they are over oil today, as the source of human survival enters the global marketplace and political...

Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without...

A look at the state of the global environment including visionary and practical solutions for restoring the planet's ecosystems. Featuring ongoing...