Back to Show
NOVA
Deadliest Tornadoes Preview
In 2011, the worst tornado season in decades left a trail of destruction across the U.S., killing more than 550 people. Why was there such an extreme outbreak? How do such outbreaks form? With modern warning systems, why did so many die? Is our weather getting more extreme - and if so how bad will it get?
Support Provided By
Season
53:34
Explore the spectacular cosmic phenomenon of a total solar eclipse.
53:30
Explore the promise and perils of new A.I. technologies.
53:10
Follow the quest to recover DNA millions of years old for the very first time.
Unlock with PBS Passport
53:29
Explore the engineering behind Paris’s iconic landmark, the tallest structure of its time.
Unlock with PBS Passport
53:17
New evidence reveals the real story of Easter Island and the builders of its stone heads.
Unlock with PBS Passport
53:31
Giant fossils uncovered in the Sahara Desert reveal new secrets of how whales evolved.
Unlock with PBS Passport
53:31
A family turns to science in their struggle to rediscover a history obscured by slavery.
53:54
Follow the quest to create a lifesaving malaria vaccine.
53:20
The inside story of China’s meteoric rise to the forefront of global innovation.
Unlock with PBS Passport
53:15
How did Earth give rise to humans? See what made our species' existence possible.
Unlock with PBS Passport
53:45
How did life bounce back after a cataclysmic extinction wiped out some 90% of all species?
Unlock with PBS Passport
53:47
See how life made the leap to land, turning a barren landscape into a lush, green world.