KQED Climate Watch: Walk the Farm 2010, Stanford University

For the fourth annual "Walk the Farm" at Stanford, hikers trekked 21 miles to learn about global warming and see first-hand how the changing climate is affecting the campus. See scientists Chris Field, Carol Boggs, and Bill Anderegg explain their research into how climate change is affecting species. (produced by KQED's Climate Watch, www.kqed.org/climatewatch)

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