Twister!

Science writer Bill Haduch takes storm-chasing readers through the fundamentals of tornadoes, including the properties that allow funnel clouds to form and why roofs are blown off during a twister. Here, too, are accounts from survivors, and intro to the tricky science of storm prediction, before-and-after scenes from devastating tornadoes, and safety tips for kids in case they're ever faced with an actual twister touching down.