245 00|a Mystery of the megavolcano.

260 __|a Alexandria, VA : |b PBS, |c 2006.

500 __|a Copyright permission expires 03/11/09.

500 __|a Title from web site description.

508 __|a Director, Ben Fox.

511 0_|a Narrator, Neil Ross.

520 __|a A remote lake in Southeast Asia conceals evidence of Earth's greatest volcanic cataclysm of the last 100,000 years. Miles beneath its placid surface lies a magma chamber that exploded so violently during the Ice Age that gases and ash may have encircled the globe and blotted out the sun for years on end. The Toba eruption may have helped kick the climate into an unprecedented freeze and perhaps even pushed ancestral human populations to the brink of extinction. In a classic science detective story, NOVA pieces together the clues about this great catastrophe and probes questions about human evolution and Earth's fragile ecosystems.

521 __|a Middle school to adult.

546 __|a Closed captioned for the hearing impaired.

650 _0|a Volcanoes |z Indonesia.

650 _0|a Volcanoes |x Environmental aspects.

651 _0|a Toba Lake Region (Indonesia) |x History.

700 1_|a Fox, Ben

700 1_|a Ross, Neil

710 2_|a WGBH (Television station : Boston, Mass.)

710 2_|a PBS

730 0_|a Nova (Television program)

856 42|a http://www.pbs.org/wgbh/nova/megavolcano/