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Rain link: Sprinkles make ground shake
November 2, 2006
German geologists, monitoring swarms of tiny tremors in Bavaria, found that a little bit of rain can change water pressure in porous rocks enough to set off an earthquake.
CHANGING COURSE: AN AMAZONIAN FEAT
From studying ancient mineral grains, researchers at the University of North Carolina have learned that the Amazon, the world's largest river basin, once flowed in the opposite direction – from the Atlantic Ocean to the Pacific.
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