Harsh Weather, Knee Injuries Doesn't Stop Filmmaker From...
Clip: 11/29/2012 | 5m 47s
James Balog has dedicated his life to capturing the earth's melting glaciers on film as climate change causes them to shrink drastically. Hari Sreenivasan talks to Balog about why he has risked so much for this mission.
Aired: 11/29/12
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