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Answers on subjects from dark matter to disappearing bees, from the magazine that's been enlightening and entertaining Americans for nearly 150 years. What happened to the Neanderthals? When is the next Ice Age due? Why do we hiccup? From end-of-the-world scenarios to what goes on within our own brains and bodies, the experts at Popular Science magazine uncover the secrets of the universe and answer 100 of science's most mysterious questions. With sections on Physical Matter and Forces, Space, Human Body, Earth, Other Life-Forms, and Human Triumphs and Troubles, 100 Mysteries of Science Explained takes you into the fascinating world of black holes, time travel, DNA, earthquakes, and much more.