The clouds begin to swirl into a funnel, and when it touches the ground one of the greatest forces of nature arrives: a tornado. As many as one thousand tornadoes strike the United States every year, devastating everything in their path with wind speeds that can reach over two hundred miles per hour. Author Bonnie Ceban explores the causes of these storms, how tornado victims survived their ordeals, and how scientists use state-of-the-art technology to stay one step ahead of disaster.
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