Volcanologists search for an elusive volcanic mega-eruption that plunged the medieval earth into a deep freeze. Investigate the geologic evidence from Greenland all the way to Antarctica to identify the 750-year-old culprit.

NOVA Season 45 Episodes...

• s45e01 - Death Dive to Saturn
• s45e02 - Secrets of the Shining Knight
• s45e03 - Ghosts of Stonehenge
• s45e04 - Secrets of the Forbidden City
• s45e05 - Killer Volcanoes
• s45e06 - Killer Hurricanes
• s45e07 - Killer Floods
• s45e08 - Extreme Animal Weapons
• s45e09 - Bird Brain
• s45e10 - Day the Dinosaurs Died
• s45e11 - Black Hole Apocalypse
• s45e12 - The Impossible Flight

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.