author : David GrinspoonDr. David Grinspoon is an astrobiologist and award-winning science communicator and author. In 2013 he was appointed the inaugural Chair of Astrobiology at the Library of Congress. He is a frequent advisor to NASA on space exploration strategy, and is on the team for the Curiosity Mars Rover. Grinspoon's previous books include Earth in Human Hands (2016) and his writing has appeared in the New York Times, Slate, Scientific American, Los Angeles Times, and others. He lives in Washington, DC.