U.S. Secretary of State Condoleezza Rice addresses delegates at the Major Economies Meeting on Energy Security and Climate Change at the State Department in Washington September 27, 2007. At right is James Connaughton, chairman of the Council on Environmental Quality. The world's biggest greenhouse gas polluters -- including the United States and China -- sent envoys to the U.S. State Department on Thursday for discussions on climate change and what to do about it.
REUTERS/KEVIN LAMARQUE