Video
Podcasts
Blogs
Quizzes
Games
most watched: natural disasters videos
How Tornadoes Work
Tornadoes are one of the most violent type of storms, with 800 each year in the U.S. Learn more about tornadoes in this video from Discovery.
Tornadoes are one of the most violent type of storms, with 800 each year in the U.S. Learn more about tornadoes in this video from Discovery.
©1998-2012 HowStuffWorks, Inc.
