NASA cryosphere animation

There's a short narrated version (5 min) and various edits of a longer version (7.5 min and huge files). Either of the long versions (narrated or labeled with music) is worth the download.

The animation is part of a collection at the Scientific Visualization Studio of the Goddard Space Flight Center. As of this writing, a search by animation ID shows that one of the animators posted something as recently as last Monday, so they're still getting funding!