According to The Washington Post, a two studies state the Arctic’s ice is melting far faster than originally thought attributing the event to climate change. San Francisco State University in California biologist Jim Steele has produced a video that describes why why the timing and mechanisms of glacier retreats is evidence of natural, and not human induced, climate change.

The video is adopted from Dr. Steele’s book Landscapes and Cycles: An Environmentalist’s Journey to Climate Skepticism.