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NOW on PBS | On Thin Ice | Preview | PBS

Duration: 04:44

This video previews the one-hour NOW special, "On Thin Ice" airing April 17 (check local listings) In it, two men go on a remarkable journey high in the Himalayas to investigate threats to global water and food supply. David Brancaccio and environmentalist Conrad Anker -- one of the world's leading high altitude climbers - adventure to the Gangotri Glacier in the Himalayan Mountains, the source of the Ganges River, to witness the great melt and its dire consequences first-hand.

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Post Date: April 17, 2009