Tom Swetnam
Professor, Dendrochronology
Director, Laboratory of Tree-Ring Research
University of Arizona
Tucson, Arizona

Aug. 24, 2012

Tree Rings Tell Tales of Ancient Fires and Climate

Are the movements of wildfires as predictable as the weather? And does climate change cause bigger, hotter blazes?

fire, tree rings, dendrology, climate change, wildfires, forest fire

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Michael Pollan Talks Plants and Food

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Happy Thanksgiving!

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Mystery Box

Meet The Balloonatics

\tIt's crunch time for the 'balloonatics' at Macy's Parade Studio. The balloons themselves, which are designed and fabricated in a warehouse in New Jersey, are getting their final checkup before the Macy's Thanksgiving Day Parade. John Piper and Jim Artle take us around the studio and spill the secrets of inflation, explain how to calculate whether your balloon will float, and explain why the balloons look better after a little time in the sun.

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\t \t\t \t\t\tDownload MP4 | Watch on YouTube. \t

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