This glacier has retreated 9 miles in the past 10 years, more than it had retreated in the previous 100 years. Watch as a section larger than the tip of Manhattan calves into the ocean.

What do you think? Is global warming a natural event, a natural event exacerbated by mankind, or completely manmade?

The footage is epic, and the score is pretty amazing, too. It’s nominated for an Academy Award for “Best Original Song.”