Episode 1
Aired Jan 4, 2017
Secrets of the Sky Tombs
Scientists explore mountain tombs in the Himalayas, revealing ancient secrets about the people who settled there, including rituals to ward off restless spirits.
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Episode 2
Aired Jan 11, 2017
The Nuclear Option
Scientists and engineers work to control a nuclear renaissance five years after the disaster at the Fukushima Daiichi Nuclear Power Plant.
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Episode 3
Aired Feb 1, 2017
Search for the Super Battery
David Pogue investigates how batteries work and what the future may hold for technical innovation.
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Episode 4
Aired Feb 8, 2017
Ultimate Cruise Ship
Shipbuilders in Italy work around the clock to build the Seven Seas Explorer, the world's largest and most luxurious cruise ship.
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Episode 5
Aired Feb 15, 2017
The Origami Revolution
The art of origami reshapes the world, affecting drug development and future NASA space missions.
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Episode 6
Aired Feb 22, 2017
Why Trains Crash
Investigators study wreckage of train accidents; safety experts test crash prevention designs.
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Episode 7
Aired Apr 19, 2017
Holocaust Escape Tunnel
Archaeologists discover a tunnel near Vilnius, Lithuania, which served as an escape route for Jews fleeing the Nazis during World War II.
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Episode 8
Aired Apr 26, 2017
Building Chernobyl's MegaTomb
Engineers build a dome to contain the crumbling remains of the Chernobyl nuclear reactor.
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Episode 9
Aired May 17, 2017
Chinese Chariot Revealed
Design secrets that made chariots a war machine for hundreds of years; how they were used and how they helped unify China.
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Episode 10
Aired May 31, 2017
Poisoned Water
The water crisis in Flint, Mich., brings awareness to the vulnerabilities of water systems across the U.S.
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Episode 11
Aired Aug 21, 2017
Eclipse Over America
The history of eclipse science and research into the solar corona.
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Episode 12
Aired Sep 13, 2017
Death Dive to Saturn
The Cassini space probe attempts to dive between the innermost ring and top of Saturn's atmosphere.
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Episode 13
Aired Oct 4, 2017
Secrets of the Shining Knight
A re-engineering of Greenwich armor to get a sense of what it was like to be a knight and how the armor was manufactured in medieval times.
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Episode 14
Aired Oct 11, 2017
Ghosts of Stonehenge
Archaeological digs reveal new clues as to who built Stonehenge and why.
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Episode 15
Aired Oct 18, 2017
Secrets of the Forbidden City
The architectural design of Beijing's ancient complex of palaces and temples enabled it to survive centuries of earthquake shocks.
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Episode 16
Aired Oct 25, 2017
Killer Volcanoes
The hunt for a volcanic mega-eruption that plunged medieval Earth into a deep freeze includes geologic evidence from Greenland to Antarctica.
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Episode 17
Aired Nov 1, 2017
Killer Hurricanes
Researching the Great Hurricane of 1780, which blasted its way across the Caribbean, why it was so dangerous and the potential for more mega-storms in the future.
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Episode 18
Aired Nov 8, 2017
Killer Floods
Efforts to uncover the geologic footprints of colossal megafloods in Iceland and on the seabed of the English Channel.
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Episode 19
Aired Nov 22, 2017
Extreme Animal Weapons
Why some animals have extreme armaments, including claws, horns, fangs and stings.
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Episode 20
Aired Dec 20, 2017
Bird Brain
Scientists test avian aptitude with brainteasers that reveal acute intelligence.
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Episode 21
Aired Dec 27, 2017
Day the Dinosaurs Died
Scientists discover new clues as to the catastrophe that ended the reign of the dinosaurs on Earth.
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