Science Nov 28 Watch New Climate Change Deal to Succeed Kyoto a Long Shot What's behind the long struggle to reach a new international agreement on reducing greenhouse gases? Margaret Warner and The Washington Post's Juliet Eilperin preview the U.N.'s annual climate conference.
World Sep 22 Obama Addresses Climate Change in U.N. Speech The United States is a serious and determined partner in combating global warming, President Barack Obama told world leaders Tuesday as he sought to show U.S. resolve ahead of crucial climate change talks in Copenhagen in December.