Fri 2/27/15 Hr 2 JBS: Jerry Hendrix, Center for a New American Security Dr. David H Grinspoon, Astrobiology chair, Library of Congress.

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February 27, 2015

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Fri 2/27/15 Hr 2 JBS: Jerry Hendrix, Center for a New American Security Dr. David H Grinspoon, Astrobiology chair, Library of Congress.