![]() Across the globe, it turned summer into winter. Nearly 750 years ago, this volcano's colossal explosion shot a million tons of rock and ash into the atmosphere. ![]() From Greenland to Antarctica, the team finds telltale "fingerprints" in ice and soil layers until, finally, they narrow down the culprit to a smoldering crater on a remote Indonesian island. Showing previously unaired footage, it follows the days immediately preceding the June 1991 eruption, the eruption itself, and the aftermath. 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, which chilled the entire planet. Summary 'This program waits with a group of geologists as they monitor the signs from Mount Pinatubo and try to determine exactly when it will erupt. So what killed off these families? The chronicles of that time describe a run of wild weather that devastated crops and spread famine across Europe. At first they assume it's a plague pit from the Black Death, but when they date the bones, they're a century too early. The mystery begins when archaeologists find a hastily dug mass grave of 4,000 men, women, and children in London. NOVA follows a team of volcano sleuths as they embark on a worldwide hunt for an elusive volcanic mega-eruption that plunged the medieval earth into a deep freeze. Published by PBS broadcasted as part of PBS Nova series Science Documentary hosted by Craig Sechler,
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