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 http://www.pbs.org/kcet/wiredscience/video after original broadcast. Tune in to WIRED SCIENCE on your local PBS station (check local listings). For more information, visit http://www.pbs.org/wiredscience
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