, alaska, past nugget falls and through the blueberry colored icebe icebergs, you will find mendenhall glacier. of what's left of it. >> the ice came out to right about here in 2007. >> reporter: wow. five years ago, we'd be bumping into the glacier right here. >> yeah. >> reporter: and if you time your visit just right, you might run into james, nature photographer, geo-morphologis and reformed climate change skeptic. >> when i first heard about the man-made climate change story, i had a knee jerk reflexive skepticism. >> reporter: but the more he learned about ice, the more he worried. the more time he spent the the arctic, the more he saw glaciers disappearing. and the more he thought about his kids. >> i imagine myself as an old man sitting on a rocking chair and i hear my daughters saying to me, you know, what were you doing when this change was happening? >> reporter: and so he launched the extreme ice survey. an effort to capture the changing planet by placing time lapse cameras at the top of the world. and as you can see in the new film "chasing ice," -- >> look at that. look at the wh