View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann Tornadoes are the most violent storms on Earth, with wind velocities that can exceed 200 miles per hour. How do these terrifying cyclones form? Meteorologist James Spann sheds... Read more »
Hi Kidz! Welcome to a BRAND NEW SEASON of the DR. Binocs show. Have you ever wondered how extreme the climate change on our planet can get? Watch this video by Dr.... Read more »
