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NOVA
How Wildfires and Ozone Led to Terrible Air Quality
During summer 2021, cities like New York and Sacramento reported higher-than-normal air pollution — with Denver on Aug. 7 reporting the worst air quality in the world.
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53:32
Meet one of the ocean’s most beautiful and destructive species: Lionfish.
53:47
Psychedelics are unlocking new ways to treat conditions like addiction and depression.
53:30
Is artificial intelligence making policing and courts fairer, or is it increasing bias?
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53:43
A team tackles the restoration of iconic Notre Dame Cathedral.
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53:31
Can innovative engineering projects save Venice?
53:33
Can innovative drugs and therapies finally end HIV?
53:33
Discover how NASA engineers built and launched the most ambitious telescope of all time.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
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53:20
How could a single ship cause a major supply chain crisis around the globe?
53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate
53:31
Explore great ancient Maya cities and why their inhabitants abandoned them.