James Balog, one of the world’s premier nature photographers, joins Bill to explain how “the earth is having a fever.” At tremendous risk to his own safety, Balog has been documenting the erosion of glaciers in Switzerland, Greenland, Iceland, and Alaska. Now he joins Bill to share his amazing photos, discoveries, and self-discoveries – including his transformation from climate change skeptic to true believer, and his mission to capture footage of these destructive environmental consequences before it’s too late. Balog’s soon-to-be-released film, Chasing Ice, is a breathtaking account of climate change in action.

“What made me a skeptic 30 years ago was that I didn’t have it in my head that it was possible that our species, homo sapiens, was capable of so profoundly altering the basic physics and chemistry of the planet,” Balog tells Bill. “And of course the revelation that we can alter the physics and chemistry so profoundly is something that has just emerged in the scientific community in the past ten or 15 years… It’s a really revolutionary idea.”

Watch the trailer for Chasing Ice:

Full transcript of the show available here.