Up Next
Back to Show
Watch Preview
NOVA
Deadliest Tornadoes
Season 39
Episode 10
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
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.
Unlock with PBS Passport
53:47
See how Earth transformed from a barren hellscape to a planet capable of sustaining life.
53:20
Dive into the subconscious to see what’s really driving the decisions you make.
53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
