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  • : 1039
  • : 306
  • PBS
  • 21
  • Documentary

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49x1
Arctic Sinkholes
Episode overview
Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters. In Alaska, a huge lake erupts with bubbles of inflammable gas. Scientists are .. show full overview
49x2
Secrets in the Scat
Episode overview
Scott Burnett is “Scatman”—an Australian ecologist on the trail of the secrets of poop. By identifying and analyzing animal scat for DNA and hormones, he discovers essential details of .. show full overview
49x3
Great Mammoth Mystery
Episode overview
Sir David Attenborough investigates a unique site in southern England where amateur fossil hunters uncovered giant mammoth bones and evidence of Neanderthals. A team of paleontologists .. show full overview
49x4
Augmented
Episode overview
Follow the dramatic personal journey of Hugh Herr, a biophysicist working to create brain-controlled robotic limbs. At age 17, Herr’s legs were amputated after a climbing accident. .. show full overview
49x9
Predicting My MS
Episode overview
A filmmaker with a rare type of multiple sclerosis explores the mysterious causes of MS.
49x20
Predicting My MS
Episode overview
The filmmaker looks back on his life, trying to understand why he contracted a rare form of Multiple Sclerosis: Primary Progressive Multiple Sclerosis.
49x5
Determined: Fighting Alzheimer's
Episode overview
Follow three women at risk of developing Alzheimer’s as they join a groundbreaking study to try to prevent the disease – sharing their ups and downs, anxiously watching for symptoms, and hoping they can make a difference.
49x6
Dinosaur Apocalypse: The New Evidence
Episode overview
Striking new fossils paint a picture of life right before the asteroid impact.
49x7
Dinosaur Apocalypse: The Last Day
Episode overview
Scientists use new fossils to reconstruct the day the dinosaurs died.
49x8
Why Ships Crash
Episode overview
How could a single ship cause a major supply chain crisis around the globe?
49x9
Ice Age Footprints
Episode overview
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
49x10
Ultimate Space Telescope
Episode overview
Follow the dramatic story of NASA’s James Webb Space Telescope – the most complex machine ever launched into space – in hopes of peering deeper back in time than ever before and answering some of astronomy’s biggest questions.
49x11
Saving Venice
Episode overview
Rising seas and sinking land threaten to destroy Venice. Can the city’s new hi-tech flood barrier save it? Discover the innovative projects and feats of engineering designed to stop this historic city from being lost to future generations.
49x12
Ending HIV in America
Episode overview
Almost 40 years after the discovery of HIV, could we be on the verge of ending the AIDS epidemic in America? As of 2019, in the U.S., there were only 34,000 new cases of the disease—a .. show full overview
49x13
Computers v. Crime
Episode overview
In police departments and courts across the country, artificial intelligence is being used to help decide who is policed, who gets bail, how offenders should be sentenced, and who gets .. show full overview
49x14
Can Psychedelics Cure?
Episode overview
Hallucinogenic drugs—popularly called psychedelics—have been used by human societies for thousands of years. Today, scientists are taking a second look at many of these mind-altering .. show full overview
49x15
Ocean Invaders
Episode overview
Lionfish – long prized in home aquariums – have invaded the Atlantic, and are now one of the ocean’s most successful invasive species, wreaking havoc in waters across the globe. Join .. show full overview
49x16
Nazca Desert Mystery
Episode overview
One of the world’s greatest ancient enigmas, the Nazca lines are a dense network of criss-crossing lines, geometric shapes, and animal figures etched across 200 square miles of Peruvian .. show full overview
49x17
Crypto Decoded
Episode overview
From Bitcoin to NFTs, crypto is making headlines. But what exactly is it, and how does it work? Experts go beyond the hype and skepticism to unravel the social and technological .. show full overview
49x18
Zero to Infinity
Episode overview
Zero and infinity. These seemingly opposite, obvious, and indispensable concepts are relatively recent human inventions. Discover the surprising story of how these key concepts that .. show full overview
49x19
Rebuilding Notre Dame
Episode overview
In April 2019, the world watched as a devastating fire almost destroyed Paris’s iconic Notre Dame Cathedral. Go behind the scenes with a team of engineers, masons, and timber workers .. show full overview

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