People attend the U.N. climate talks conference in Doha, Qatar, Wednesday, Dec. 5, 2012. The delegates are aiming to seal an interim pact by December 7 on reducing Earth-warming greenhouse gas ... more 

People attend the U.N. climate talks conference in Doha, Qatar, Wednesday, Dec. 5, 2012. The delegates are aiming to seal an interim pact by December 7 on reducing Earth-warming greenhouse gas emissions.(AP Photo/Osama Faisal) less