Mutant Tornados (E07)

As the atmosphere warms, tornados are appearing in places not accustomed to this deadly phenomenon, including more densely populated areas. Tornadoes are no longer contained in Tornado Alley. They are also becoming more deadly as tornado clusters are growing. This episode follows the stories of storm chasers who’ve had to run for the lives and survivors of some of the deadliest recent tornadoes. (PBS)