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WIRED SCIENCE | Dr. Schrempp's Chem Lab | PBS

Duration: 05:45

Host Chris Hardwick learns how to turn cotton balls into smokeless gunpowder with chemist Chris Schrempp, star high school teacher and author of the book Bangs, Flashes, and Explosions.

To see the full segment, visit www.pbs.org/kcet/wired... after original broadcast. Tune in to WIRED SCIENCE on your local PBS station (check local listings). For more information, visit www.pbs.org/wiredscience

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Post Date: December 12, 2007