Environmentalists play dead as they stage a demonstration in the Bella center during the Climate Conference in Copenhagen, Denmark, Monday, Dec. 7, 2009. The largest and most important U.N. climate change conference in history opened Monday, with organizers warning diplomats from 192 nations that this could be the best, last chance for a deal to protect the world from calamitous global warming.
/ AP Photo/Anja Niedringhaus
