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Lonely Planets: The Natural Philosophy of Alien Life

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PEN Literary Award Winner: "The best, most entertaining examination of the possibility of other life in the universe since [Carl] Sagan's best work." —Boulder Daily Camera


It's been decades since Carl Sagan first addressed the general public about the possibility of extraterrestrial life from a scientist's perspective. We've learned a lot in those years, and now planetary scientist David Grinspoon investigates the big questions: How widespread are life and intelligence in the cosmos? Is li...