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Reload this Page Asteroid attack "pruned" ancient life? (Earth, new)
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Old 05-23-2009, 07:50 PM
 
Location: Texas
5,070 posts, read 9,800,916 times
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The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given it a boost, says a new University of Colorado at Boulder study.
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