The iceberg, which is about the size of Delaware, is an important reminder that ice on Earth is changing--and not just in Antarctica, says Dr. Twila Moon, a glacial expert with the

Activists, wildlife rangers and indigenous leaders are dying violently at the rate of about four a week, with a growing sense around the world that ‘anyone can kill environmental defenders  

Italian company plans to drill four exploration wells in the Arctic, which some say will endanger polar bears, bowhead whales and other marine mammals    

Royal Academy of Engineering report backs increased use of biofuels but says more should come from waste rather than food crops.