How do you measure something that destroys everything it touches? That’s an essential question for tornado researchers. After he narrowly escaped the largest twister on record—a two-and-a-half-mile-wide behemoth with 300-mile-an-hour winds—National Geographic Explorer Anton Seimon found a new, safer way to peer inside them and helped solve a long-standing mystery about how they form.

For more information on this episode, visit nationalgeographic.com/overheard

Want more?

See some of Anton’s mesmerizing tornado videos and his analysis of the El Reno tornado. Check out what we know about the science of tornadoes and tips to stay safe if you’re in a tornado’s path. Plus, learn more about The Man Who Caught the Storm, Brantley Hargrove’s biography of Tim Samaras.

And for paid subscribers:

Read “The Last Chase,” the National Geographic cover story chronicling Tim Samaras’ pursuit of the El Reno tornado. 

If you like what you hear and want to support more content like this, please consider a National Geographic subscription. Go to natgeo.com/exploremore to subscribe today. 

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