Catalog - The City Library

Format:

DVD, Videorecording, Projected Medium, Visual Materials

Title:

Mystery of the megavolcano / A Mentorn Production for NOVA/WGBH Boston in association with CBC, FIVE, National Geographic Channel International, Southern Star, and TV2 ; directed by Ben Fox.

Publisher, Date:

[Boston] : WGBH Boston Video, [2007]

Description:

1 videodisc (56 min.) : sound, color ; 4 3/4 in.

Summary:

Far back in the past, monster volcanoes erupted with cataclysmic violence, far greater than Vesuvius, Pinatubo, Mount St. Helens, or any other volcano in recorded human history. Puzzling results from three different laboratories send volcano sleuths on a worldwide hunt for evidence, from Greenland's ice cap to Sumatra's jungles. The clues converge on an astounding possibility: that a single ancient eruption 75,000 years ago blasted ash and rock across an entire continent, spewing so much sulfuric acid into the atmosphere that Earth was plunged into a global deep freeze. But can they prove it? And could it happen again? Using vivid computer-generated imagery, follow the clues that reveal the biggest volcanic cataclysm in earth's history. And, if these scientists are right, the ancient supervolcano they locate -- and others like it, including a behemoth lurking beneath Yellowstone National Park -- may someday reawaken, with catastrophic consequences for our modern world.

Subjects:

Supervolcanoes.

Volcanic eruptions -- History.

Volcanism -- Effect of environment on.

Earth temperature -- Effect of volcanic eruptions on.

Glacial epoch.

Human evolution.

Documentary television programs.

Educational television programs.

Historical television programs.

Video recordings for the hearing impaired.

Video recordings for people with visual disabilities.