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Did life on Earth really come from Mars?
One scientist's theory made headlines Thursday, but while his critics say he's not a kook, his claims might be overblown.
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Did life on Earth really come from Mars?
One scientist's theory made headlines Thursday, but while his critics say he's not a kook, his claims might be overblown.
Date: 8/30/13
Views: 219933
Video by:  Newsy
 
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