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The Great Alien Debate (Part 1) - Scientific American (blog)
URL: http://blogs.scientificamerican.com/life-unbounded/2014/08/26/the-great-alien-debate-part-1/
Submitted: Wed Aug 27 2014
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CT: UFOSeek News 2013: The Great Alien Debate (Part 1) - Scientific American (blog)
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The Great Alien Debate (Part 1). By Caleb A. Scharf | August 26, 2014 |. The views expressed are those of the author and are not necessarily those of Scientific American. Email Print · Caleb A. Scharf Caleb Scharf is the director of Columbia University ...