The U.N. has announced it's undertaking an effort to protect the planet from killer asteroids. Trace explains what the plan will be if a giant space rock sets its sights on Earth.
via Discovery News http://news.discovery.com/space/videos/the-uns-plan-to-defend-earth-from-asteroids-video.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/space/videos/the-uns-plan-to-defend-earth-from-asteroids-video.htm#mkcpgn=rssnws1
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