NASA time-lapse shows 32 years of Arctic ice shrinkage
A time-lapse video from NASA shows the shrinkage of Arctic sea ice from 1984 to 2016. In 1984, there was 1.8 million square km of ice that was at least five years old at its lowest annual amount. This "older" ice had shrunk to 110,000 square km by September 2016. The video also shows the seasonal circulation of the ice.