A monitor in Hawaii registered 400 parts per million of carbon dioxide in Earth's atmosphere. Here's what that means.
In her later years, Margaret Thatcher tried to water down her climate legacy, but as prime minister, she rallied the world behind global action.
New figures show large swathes of the U.S. remain in the grip of drought, with worse to come.
Homes ripped apart by Sandy are proving to be magnets for bargain hunters -- but not everyone is getting a good deal.
3D printing could slash the carbon footprint of manufacturing and provide nifty solutions for a disaster-prone world.
Ever find yourself around the dinner table at a loss for good climate arguments? Follow this flowchart!
More than $17 billion is at stake as the civil trial against BP gets rolling in New Orleans.
Researchers are heading out to sea for a forensic look at the storm’s impacts.
New research shows that climate change will expand habitats across Northern Europe for many mammals.