Polar bears may be the world's largest land carnivores but they are also vulnerable, threatened by climate change, pollution, hunting, and more. This has made them the iconic spokes-species for a range of environmental campaigns. Planet 100 prese ...
Case solved! Islands are disappearing due to global warming, the EPA is looking to block mountain top removal and the world's best known landmarks turn off the lights.
Cave formations may offer a new chance to track climate history back thousands of years. Discovery News' James Williams climbs below the surface to learn more.
Core samples from Antarctica tell a fascinating story about how the Earth's climate has changed over thousands of years. Discovery News' James Williams digs into the details.
Stephen Schneider, PhD. and author of "Science Is A Contact Sport" at the Copenhagen Climate summit discussing his thoughts on the progress of the summit so far.
Eve Mosher is taking her message to the streets. She's chalking a line across New York City that shows where flooding could reach if a really big storm hits.
Get a three-minute primer on Roger Angel's plan to protect Earth from the sun's harmful rays by constructing a large "shield" made of the thinnest lenses ever created.
The cryosphere consists of those parts of the Earth's surface where water is found in solid form -- snow, sea ice, glaciers, permafrost, ice sheets, and icebergs. Take a tour of the cryosphere.