More Extras From This Episode
First Time Britain Left Europe
Geologists think these iconic chalk cliffs hold an extraordinary secret.
First Time Britain Left Europe
More Episodes
Experts drill into the impact crater of an asteroid that created a worldwide cataclysm.
Day the Dinosaurs Died
NOVA uncovers the secrets of nature’s battleground—claws, horns, fangs and all.
Extreme Animal Weapons
Scientists uncover geologic evidence of epic floods that tore through ancient landscapes.
Killer Floods
Experts reconstruct the Great Hurricane of 1780 to help predict the risk of future storms.
Killer Hurricanes
Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
Killer Volcanoes
How has China’s magnificent Forbidden City withstood centuries of earthquakes?
Secrets of the Forbidden City
Discover the world of medieval knights and see how their armor was made.
Secrets of the Shining Knight
Follow Cassini's final days as it skims the cloud tops before plunging into the planet.
Death Dive to Saturn
The country’s first solar eclipse in 99 years will cast a light on the Sun’s secrets.
Eclipse Over America
