Life in the Freezer

I love David Attenborough documentaries, not just for his avuncular narration but for the way he casually blindsides you with amazing facts you'd never heard (or didn't remember). For example, did you know 3/4 of the earth's fresh water is frozen in Antarctica? Or that krill is the most populous creature on earth? You learn both of these things in the first ten minutes of "Life in the Freezer," more than you do in the entirety of the pretty but intellectually messy "March of the Penguins."