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by David Turell , Wednesday, December 19, 2012, 19:57 (4358 days ago)
http://blogs.scientificamerican.com/observations/2012/12/19/the-most-fascinating-human-...
, Wednesday, December 19, 2012, 19:57 (4358 days ago), Wednesday, December 19, 2012, 19:57 (4358 days ago)