@Revkin tweets related to: Asteroid, Detection, Experts, Senate

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Making a case for the need to detect asteroids before they hit Earth, a former astronaut said Wednesday that the number of casualties would have been enormous had the space rock that exploded in Russia last month blown apart directly over New York City instead.
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RT @henryfountain: Better Asteroid Detection Needed, Experts Tell Senate Panel http://t.co/laEnKKXyqs

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