Other Worlds: The Search for Life in the Universe, by Michael D. Lemonick (Simon & Schuster, 272 pp., $25)
THERE is very little, if any, unexplored territory left on our planet. We know, therefore, that there are no lost civilizations in the heart of Africa, no Lost Worlds in the Amazon jungle where dinosaurs still flourish, no Yetis in the high Himalayas. Those who wish to imagine strange new creatures or undiscovered civilizations nowadays must let their thoughts wander among the stars.




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