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by David Turell , Wednesday, February 06, 2013, 20:03 (4104 days ago)
http://blogs.scientificamerican.com/life-unbounded/2013/02/06/will-this-be-the-comet-of...
, Wednesday, February 06, 2013, 20:03 (4104 days ago), Wednesday, February 06, 2013, 20:03 (4104 days ago)