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Climate change's impact on forests being measured via expanding tree trunks

Research by a forest ecologist at the Smithsonian Institution has shown tree trunks gradually fattening over time, indicating that many of the study's trees were growing two to four times faster than expected. That raised questions about climate change's impact on the age-old rhythms of U.S. forests.

11:46 am February 26, 2010 | | RSS 2.0 |
February 26, 2010