David H. Grinspoon
David H. Grinspoon

David Grinspoon, chair of astrobiology at the Library of Congress, is the author of Lonely Planets: The Natural Philosophy of Alien Life.

Future Tense
Sept. 27 2013 1:02 PMIn Search of Planetary IntelligenceWe don’t have it on Earth. But maybe it’s somewhere out there.
Science
Jan. 7 2004 7:26 PMIs Mars Ours?The logistics and ethics of colonizing the red planet.
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20x
June 29 2015 11:55 AM Supreme Court Blogs, TV Recaps, and Wikipedia  What a legal-affairs writer visits on the Internet more than 20 times a month.