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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Lexicon Valley
March 31 2015 9:17 AM The Redline of March Overheard on email: Slates copy desk rounds up the month’s style and grammar rulings.