A week after a meteor exploded over Russia on the same day that an asteroid swung closely past Earth, experts discuss how the potential threats posed by near-Earth objects should be addressed. Astronomers Donald Yeomans and John Tonry weigh in on how to keep the planet safe.
Source: http://www.npr.org/2013/02/22/172696688/russia-meteor-renews-focus-on-asteroid-threats?ft=1&f=1007
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