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Asteroids and dinosaurs: Unexpected twists and an unfinished story Plate tectonics might seem like a routine topic from a 7th grade textbook, but in the 1970s, plate tectonics was cutting-edge science. The theory had onl
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Document Date: 2012-05-14 14:30:45
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File Size: 1,61 MB
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Asteroids and dinosaurs: Unexpected twists and an unfinished story Plate tectonics might seem like a routine topic from a 7th grade textbook, but in the 1970s, plate tectonics was cutting-edge science. The theory had onl