Climate Change

See a sea turtle's view of the Great Barrier Reef

Barack Obama and David Attenborough discuss the natural world

6 things to know about Earth's 6th mass extinction

Pope Francis takes climate debate to a new level

5 dangers of oil drilling in the Arctic Ocean

The Pliocene called. It wants its CO2 levels back.

Fjords hoard more carbon than we thought

Battling climate change requires actions big and small

Which U.S. states worry the most about climate change?

Scientist enlists forest fungi to save their own habitat

Michael Bloomberg gifts Sierra Club $30M to fund anti-coal efforts

Majestic glaciers in Alaska: Then and now