Climate Change

5 ancient civilizations that were destroyed by climate change

Beavers: 8 things to know about nature's most impressive landscape engineers

Native people built seashell islands off Florida

As U.N. makes history on Earth Day, Leonardo DiCaprio reminds us not to rest on laurels

How to share Earth with other animals

7 must-see films at the 2016 Environmental Film Fest

Migratory monarch butterflies bounce back

What's next for Oscar-winner Leonardo DiCaprio?

11 alarming facts about sea-level rise

Sea levels are rising fast, and they'll stay that way for a long time

'Vanishing Ice' chronicles the virtue and frailty of our frozen frontiers

The double-edged sword of cheap gas