Secrets Beneath the Ice Preview

Preview: Season 37 Episode 17 | 30s

Is Antarctica headed for a catastrophic meltdown? New evidence of ancient climate change may hold clues.

Aired: 12/27/11

Rating: NR

The full episode is no longer available for online streaming. Why?

Please continue to enjoy extra(s) from this episode. The full episode is still available for purchase through the "Buy Now" links.

Problems Playing Video?