Arizona PBS Previews

NOVA 4416 “Killer Volcanoes”

Preview | 30s

“Killer Volcanoes” – Join NOVA and a team of volcanologists looking 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.

Aired: 10/25/17

Expired: 11/30/17

Rating: NR

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