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NOVA

DNA-Testing Reef Diversity

Marine biologist Laetitia Plaisance investigates species diversity in two coral reefs and receives some sobering news.

Season
Thai Cave Rescue
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53:34
Follow the harrowing operation to rescue 12 boys stranded in a flooded cave in Thailand.
Addiction
53:45
Discover how opioid addiction affects the brain and how treatments are saving lives.
Volcano on the Brink
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53:37
Explore Africa’s sleeping giant—Nyamuragira, one of the world’s most dangerous volcanoes.
Volcano on Fire
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53:37
Climb into the crater of Nyiragongo, a seething and active African volcano.
Decoding the Weather Machine
1:53:20
Discover how Earth’s intricate climate system is changing.
Great Escape at Dunkirk
53:15
How courage and ingenuity saved Allied troops during the epic Dunkirk operation in 1940.
Black Hole Apocalypse
53:26
Take a mind-blowing voyage to the most powerful and mysterious objects in the universe.
Bird Brain
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53:32
Watch as birds solve puzzles and challenge our basic notions of intelligence.
Killer Floods
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54:10
Scientists uncover geologic evidence of epic floods that tore through ancient landscapes.
Killer Hurricanes
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53:11
Experts reconstruct the Great Hurricane of 1780 to help predict the risk of future storms.
Killer Volcanoes
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54:10
Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
Building Chernobyl's MegaTomb
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52:55
Engineers race to build a massive dome to contain the crumbling remains of the reactor.
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