Chasing Tornadoes

In the name of science, National Geographic's Emerging Explorer Tim Samaras gets close and personal with a tornado.
EDITOR'S NOTE: Along with his son, Paul, and storm chaser Carl Young—his longtime collaborators—National Geographic explorer and storm chaser Tim Samaras died in a tornado in El Reno, Oklahoma, on May 31, 2013. He devoted his life to unlocking the mysteries of extreme weather.