Climate Change Imperils the State of the Planet--Will the World Act?: Scientific American

Climate Change Imperils the State of the Planet--Will the World Act?: Scientific American: "NEW YORK CITY—More than 100 countries have signed on to the Copenhagen Accord—the nonbinding agreement to combat climate change hastily agreed to this past December at a summit of world leaders. As signatories, the countries agree to cut greenhouse gas emissions to keep global average temperatures from warming more than 2 degrees Celsius. The countries that have signed up to date represent more than 80 percent of the global emissions of such heat-trapping gases."