Activists in polar bear costumes hold a sign urging leaders to take immediate action to stop global warming, Saturday, Dec. 6, 2008, at a Greenpeace Rally in San Francisco, one of 20 in the United States as part of the International Day of Action on g...

Image | December 6, 2008

Activists in polar bear costumes hold a sign urging leaders to take immediate action to stop global warming, Saturday, Dec. 6, 2008, at a Greenpeace Rally in San Francisco, one of 20 in the United States as part of the International Day of Action on global warming during climate talks in Poznan, Poland.