'Chasing Ice' to Capture Climate Change

"Nightline's" Bill Weir heads to Juneau, Alaska with photographer James Balog of the Extreme Ice Survey.
3:00 | 11/16/12

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Transcript for 'Chasing Ice' to Capture Climate Change
-- showing some pictures. Went up to Juneau Alaska recently took a short drive -- Mendenhall glacier. Gloomy day. -- to meet a guy named James bay law. A photographer who's devoted his life in his career to taking pictures of -- So we jumped in his little canoe and -- -- crosses glacial lake past. Oh man gorges splash. Peak autumn colors all the more beautiful. When they -- -- relief to these floating sculptures. -- -- Get closer to the glacier they get bigger. Get to appreciate the individuality of each -- the -- The with a light plays off the crystals a deep blue it looks like a blueberries still -- only the size of the city boss and then the glacier itself looks like this. The theory -- -- village. This very otherworldly. With those peaks in crests. But as we climbed out of the can -- Dialogue was a lot more fascinated with all the green. That had taken over all the moss and Lichen covered all this area. That was ice when he first started -- up here. He's pointing across the valley there to his other camera position he says everything -- left him was ice five years ago when he set up his cameras. For the extreme. Ice survey. He's got these weatherproof. Canisters set up on glaciers all the way around the world dozens of them. And his goal is to capture. Sort of a digital memory. Of our changing planet -- very anxious as he downloaded his card to see what he had but this is what he's managed to capture Mendenhall. Over the last few years. This -- glacier. Shrinking disappearing. By the mile an indication of an alarming trend that's happening. At the top of the world. Since 1979 when the satellites -- -- half. Of Arctic Shiites has disappeared. And them majority of the land based glaciers. Have deflated. And a startling rate and dialogue as well as many climate scientists are convinced what's happening up there. Is directly related to what's happening down here. After Franken -- sandy a lot more people are wondering how much these pictures are connected and we will explore just that. Tonight. On Nightline.

This transcript has been automatically generated and may not be 100% accurate.

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