See the full episode at http://video.pbs.org/video/1108763899Remarkable time-lapse footage by James Balog, one of the world's foremost nature photographers, reveals massive glaciers and ice sheets splitting apart, collapsing, and disappearing at a rate that has more and more scientists alarmed. NOVA investigates this latest evidence of a radically warming planet on Extreme Ice, a NOVA National Geographic Television special, premiering Tuesday, March 24 at 8pm ET/PT on PBS (check local listings).To learn more please check us out online at http://www.pbs.org/wgbh/nova/extremeice/Buy the DVD: http://www.shoppbs.org/entry.point?entry=3502150&source=PBSCS_YOUTUBE_NOVA4174_EXTREMEICE:N:DGR:N:N:309:QPBS
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