See inside the eye of a cyclone witness hailstones the size of tennis balls and learn how a gentle mountain stream can become a raging surge within a few minutes. With striking images models and illustrations this visual guide offers a unique view of catastrophic weather conditions. From polar regions to the tropics Eyewitness Hurricane amp Tornado shows the effects of natures most extreme weather. Discover a bridge that collapsed due to severe gusts of wind and learn about a tree species in southwest Africa that can survive several years of drought. Along the way youll uncover historical items that reveal how ancient civilizations predicted the weather as well as the weatherforecasting techniques that have developed over the centuries and the ways in which human activity can cause weather patterns to change.Part of DKs bestselling Eyewitness series which is now getting an exciting makeover this popular title has been reinvigorated for the next generation of informationseekers and stayathome explorers with a fresh new look new photographs updated information and a new eyewitness feature fascinating firsthand accounts from experts in the field.