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Watch as birds solve puzzles and challenge our basic notions of intelligence.
S44 Ep20 | 53m 30s
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Extreme Animal Weapons
NOVA uncovers the secrets of nature’s battleground—claws, horns, fangs and all.
S44 Ep19 | 52m 55s
Scientists uncover geologic evidence of epic floods that tore through ancient landscapes.
S44 Ep18 | 54m
Experts reconstruct the Great Hurricane of 1780 to help predict the risk of future storms.
S44 Ep17 | 53m 1s
Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
S44 Ep16 | 54m
Secrets of the Forbidden City
How has China’s magnificent Forbidden City withstood centuries of earthquakes?
S44 Ep15 | 53m 30s
Ghosts of Stonehenge
Archaeological research uncovers provocative new clues about Stonehenge.
S44 Ep14 | 53m 36s
Secrets of the Shining Knight
Discover the world of medieval knights and see how their armor was made.
S44 Ep13 | 53m 30s
Death Dive to Saturn
Follow Cassini's final days as it skims the cloud tops before plunging into the planet.
S44 Ep12 | 54m 32s
Eclipse Over America
The country’s first solar eclipse in 99 years will cast a light on the Sun’s secrets.
S44 Ep11 | 53m 2s
What exactly went wrong in Flint—and what does it mean for the rest of the country?
S44 Ep10 | 54m 7s
Chinese Chariot Revealed
A team of experts rebuild an ancient battle chariot to help uncover its design secrets.
S44 Ep9 | 53m 46s
Building Chernobyl's MegaTomb
Engineers race to build a massive dome to contain the crumbling remains of the reactor.
S44 Ep8 | 52m 55s
Holocaust Escape Tunnel
At ground zero for the final solution, scientists uncover a story of hope and bravery.
S44 Ep7 | 54m 14s
Why Trains Crash
Can new crash prevention technology help us avoid deadly train accidents?
S44 Ep6 | 53m 51s
The Origami Revolution
Engineers are using origami to design drugs, micro-robots, and future space missions.
S44 Ep5 | 53m 50s
Ultimate Cruise Ship
Join pioneering shipbuilders as they embark on a feat of maritime engineering.
S44 Ep4 | 52m 55s
Search for the Super Battery
Explore the hidden world of energy storage and how it holds the keys to a greener future.
S44 Ep3 | 53m 32s
The Nuclear Option
How will we power the planet without wrecking the climate?
S44 Ep2 | 53m 32s
Secrets of the Sky Tombs
Evidence discovered in the world’s highest tombs reveals ancient rituals and beliefs.
S44 Ep1 | 53m 32s