This is one of the coolest 30-second videos I’ve seen. Coolest,
and scariest. Literally coolest. From the description, by
Youtube user Revkin: Ignatius Rigor, who studies Arctic ice and
climate at the University of Washington, has created an
animation showing how the oldest thickest sea ice has been
progressively flushed from the Arctic Ocean over the last two
decades. More background here: Caveat: I don’t know what the
source of the data is for this animation, whether it is a model
or based on real satellite observations. That said: And a
picture of snow, for good measure.