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NOW on PBS | On Thin Ice | Preview | PBS Buy the DVD: 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. The two also visit Montana's Glacier National Park to see the striking effects of global warming closer to home and learn how melting glaciers across the world can have a direct impact on food prices in the U.S. Visit right now for a special preview video, David's 12-day travel journal, and amazing photographs from their adventure.
Length: 04:44


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