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Bamboo Bicycles Roll Out

To be bike-ready, the bamboo must be cooked in an oven, stripped, and sealed. We visited the workshop of Valid Cycles in Woodinville, Washington, to see how the bikes are made.

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Teacher Feature: Ethnobotanist Tom Carlson

Science Friday pays tribute to a great science teacher. "Office hours are some of my favorite hours of the week," says Tom Carlson, a medical doctor, ethnobotanist, and instructor of 1700 students annually at the University of California, Berkeley.

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Desktop Diaries: Daniel Kahneman

"I have always emphasized the willingness to discard," says psychologist and Nobel Laureate Daniel Kahneman. That philosophy works on two levels—forget desk trinkets, Kahneman doesn't have a desk—and he doesn't hoard ideas either he says.

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