biGVS8t04yI when-weather-changed-history-super-outbreak When Weather Changed History | Super Outbreak Season 2, Episode 14 (24th and final overall), original air date: February 25, 2009. "Examining a 1974 outbreak of tornadoes that led to changes in tornado forecasting." WEd9wJ370eg when-weather-changed-history-titanic When Weather Changed History | Titanic Season 2, Episode 3 (15th overall), original air date: October 19, 2008. aacHWoB7cmY nat-geo-environment-tornadoes-101 Nat Geo Environment | Tornadoes 101 Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes occur. zUNEFefftt8 nat-geo-environment-thunderstorms-101 Nat Geo Environment | Thunderstorms 101 At any moment, about 2,000 thunderstorms are occurring worldwide. Learn how thunderstorms form, what causes lightning and thunder, and how these violent phenomena help balance the planet's energy and electricity. LlXVikDkyTg nat-geo-environment-hurricanes-101 Nat Geo Environment | Hurricanes 101 Hurricanes are the most powerful storms known to man. Find out when hurricane season peaks, how the storms form, and the surprising role they play in the larger global ecosystem. UuW1jhxCgx0 richard-hamblyn-how-did-clouds-get-their-names Richard Hamblyn | How did Clouds get their Names? The study of clouds has always been a daydreamer’s science, aptly founded by a thoughtful young man whose favorite activity was staring out of the window at the sky. Richard Hamblyn tells the history of Luke Howard, the man who classified the clouds and forever changed humanity’s understanding of these changeable, mysterious objects. biGVS8t04yI when-weather-changed-history-super-outbreak When Weather Changed History | Super Outbreak Season 2, Episode 14 (24th and final overall), original air date: February 25, 2009. "Examining a 1974 outbreak of tornadoes that led to changes in tornado forecasting." K3azBlCKusE when-weather-changed-history-green-town-ks-tornado When Weather Changed History | Green Town KS Tornado Season 2, Episode 13 (23rd overall), original air date: February 22, 2009. uZQayBRW0Co when-weather-changed-history-katrina When Weather Changed History | Katrina Season 2, Episode 10 (20th overall), original air date: January 12, 2009. evxGkUFpV54 violent-earth-new-englands-killer-hurricane-1938 Violent Earth | New England's Killer Hurricane (1938) Edward Herrmann narrates this gripping documentary originally aired on the History Channel in 2006. It depicts the horrifying, unexpected hurricane that blasted through New England on a late September day, 1938, killing hundreds caught in its vicious path of destruction.