Killer Volcanoes

NOVA's expert team looks for the signature of a volcanic eruption big enough to have blasted a huge cloud of ash and sul... (more)

NOVA's expert team looks for the signature of a volcanic eruption big enough to have blasted a huge cloud of ash and sulfuric acid into the atmosphere. Killer Volcanoes spotlights the search for the mystery volcano that plunged the globe into a deep freeze and inflicted famine on medieval Europe. (less)

NOVA's expert team looks for the signature of a volcanic eruption big enough to have blasted a huge cloud of ash and sul... (more)

NOVA's expert team looks for the signature of a volcanic eruption big enough to have blasted a huge cloud of ash and sulfuric acid into the atmosphere. Killer Volcanoes spotlights the search for the mystery volcano that plunged the globe into a deep freeze and inflicted famine on medieval Europe. (less)