Look out below! Landslides and mudslides are some of the most dangerous forces in nature. In seconds, these roaring rivers of earth and rocks can uproot trees, flip cars, and destroy whole neighborhoods. Readers of this action-packed book will learn many earth-shattering facts, such as that a mudslide can move at speeds up to 50 miles per hour. Diagrams explain how and why these natural disasters happen. Amazing archival photographs and sidebars give an up-close look at historic landslides and mudslides from the past

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