Did humans exist before the icecaps froze over? NASA Chief Scientist, Waleed Abdalati, answers whether humans existed before the icecaps froze over in this Curiosity video.
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Curiosity: Did humans exist before the icecaps froze over?
Did humans exist before the icecaps froze over? NASA Chief Scientist, Waleed Abdalati, answers whether humans existed before the icecaps froze over in this Curiosity video.
Added: Sep 27, 2011
Views: 1029 Views
Runtime: 01:13
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