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.