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.
By Seth Borenstein, Associated Press
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.
Rallying cries for a global reduction in emissions grew louder at an international climate change summit in Copenhagen on Wednesday. Yet as Judy Woodruff reports, a deal is still far from complete.
In an interview with Gwen Ifill, EPA Administrator Lisa Jackson explains the decision to declare greenhouse gases a danger to human health.
As an international climate summit kicked off in Copenhagen on Monday, the EPA took a step toward regulating greenhouse gases by declaring them a risk to human health. Kwame Holman reports.
By Admin, PBS NewsHour
Unchecked global warming could impact the world economy on a scale comparable to world wars and the Great Depression, a report issued Monday by the British government says.
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.
Nearly 180 nations agreed to details of a pact to combat global warming Monday, leaving the United States isolated after marathon negotiations.
The following is the text of President Bush's remarks on global warming preceding his first trip to Europe as president.
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