Demand for Their Data on Climate Chills Scientists

Congressman opens probe of researchers who have reported global warming

Letters: Excerpts from letters from Joe Barton and Henry A. Waxman

Graph: Variations in the Northern Hemisphere's surface temperature for the past 1,000 years

In a move that many climate scientists find chilling, the chairman of the U.S. House of Representatives Committee on Energy and Commerce is investigating three professors whose work suggests

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