Copenhagen Climate Talks »
Divided Climate Talks End With Compromise Deal
Delegates accepted a U.S. brokered compromise after 31-hours of negotiating.
Energy »
New Hydrogen-Storage Method Discovered
Research opens the way for a radically different approach to hydrogen storage.
Environment »
Interactive: Nations Evaluate Progress Since Kyoto
Global temperatures have increased over 15 pct since the 1997 Kyoto accord.
Space »
Gallery: Constellation, NASA's Moon Program
Astronauts will launch on a rocket made up of a shuttle-derived solid rocket booster.
