Eighteen years ago, the discussion was far more about average temperatures, not the freakish extremes. Now, scientists and others realize it is in the more frequent extremes that people are truly experiencing climate change.
What's behind the long struggle to reach a new international agreement on reducing greenhouse gases? Margaret Warner and The Washington Post's Juliet Eilperin preview the U.N.'s annual climate conference.
Russia's state Duma on Friday ratified the Kyoto Protocol, which aims to fight global warming, giving the global pact a good chance of being enacted and boosting Russia's chance at joining the World Trade Organization.