The Lost world of Lake Vostok

The Lost World of Lake Vostok: It sometimes seems as if our planet has no secrets left – but deep beneath the great Antarctic ice sheet scientists have made an astonishing discovery. They’ve found one of the largest lakes in the world.

It’s very existence defies belief. Scientists are desperate to get into the lake because its extreme environment may be home to unique flora and fauna, never seen before, and NASA are excited by what it could teach us about extraterrestrial life.

In the 1970’s a British team used airborne radar to see beneath the ice, mapping the mountainous land buried by the Antarctic ice sheet. Flying near the Vostok base their radar trace suddenly went flat. They guessed that the flat trace could only be from water. It was the first evidence that the ice could be hiding a great secret.

But 20 years passed before their suspicions were confirmed, when satellites finally revealed that there was an enormous lake under the Vostok base. It is one of the largest lakes in the world – at 10,000 square km it’s about the extent of Lake Ontario, but about twice as deep. The theory was that it could only exist because the ice acts like a giant insulating blanket, trapping enough of the earth’s heat to melt the very bottom of the ice sheet.

(Watch Documentary – 54 minutes – 4 parts)
http://www.youtube.com/watch?v=maQhn96AhuI&feature=player_embedded&list=PL5E237D7816405729
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