Kaku on Asteroid Threat: "We Are Sitting Ducks"

http://www.metacafe.com/watch/cb-zhX8f6G3J1FT/

Michio Kaku, physics professor at the City College of New York and a "CBS This Morning" contributor, discusses the threat from space from small asteroids, and what he says the world needs — and costs "chump change" — to help safeguard our skies.
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