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

Washington Post
February 25, 2010
By David A. Fahrenthold

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Jess Parker hugs trees. In the woods of Anne Arundel County, he throws his arms around tulip poplars, oaks and American beeches, and holds them so tightly that his cheek presses into their bark. This is not some hiker on a lark: anybody, hopped up on campfire coffee and exercise endorphins, might hug a tree once. This is science. Parker has done it about 50,000 times.

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