Get the facts about the dangers and destruction caused by tornadoes in 12 in-depth chapters that include tracking storms, the EF-Scale, Tornado Alley, and history's deadliest twisters. Includes safety tips, statistics, sidebars, and critical thinking questions. Plus, find up-to-date, editor-curated online content including news, a full digital ebook, and live content feeds at 12StoryLibrary.com.