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FILE - In this July 19, 2007 file photo, ...
AP - il y a 4 heures 2 minFILE - In this July 19, 2007 file photo, an iceberg is seen melting off the coast of Ammasalik, Greenland. Since an agreement to reduce greenhouse gas pollution was signed in Kyoto, Japan, in Dec. 1997, the level of carbon dioxide in the air has increased 6.5 percent. Officials from across the world will convene in Copenhagen next month to seek a follow-up pact, one that President Barack Obama says "has immediate operational effect...an important step forward in the effort to rally the world around a solution." (AP Photo/John McConnico, File)