Global Warming Negotiations Down to the Wire in Cancun

For 20 years, international policy makers have assumed that climate change would be the subject of a worldwide agreement. Key nations would agree to reduce greenhouse gases and trade carbon emissions in a common market. Instead, California businesses will pay to preserve tropical forests in Mexico and Brazil. Japan will help fund nuclear power plants in developing nations. South Korea will promote renewable energy at home. Juliet Eilperin is covering the UN Climate Change Conference in Cancún for the Washington Post.