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Tornadoes are really nothing but air-but they're devastating. Did you know that... * tornadoes can travel up to three hundred miles per hour * a strong tornado can pick up a house or a truck easily and break trees like matchsticks * there are about a thousand tornadoes in the United States each year * it is not true that tornadoes never strike big cities Find out about the strongest winds on earth, where and how they are created, and how to protect yourself from tornadoes with award-winning science writer Seymour Simon in this new, updated edition filled with dramatic full-color photographs. Includes an author's note, glossary, index, and further reading section.