What's Really Under Antarctica's Ice?

If all of Antarctica’s ice melted, our coastlines would be drastically altered. Fortunately, that’s not going to happen anytime soon, but new evidence suggests that West Antarctica - which holds around 5 METERS of sea level rise - is melting a lot faster than scientists once thought. And, a new study warns of a sinister threat buried deep beneath the melting ice - one that may cause a feedback loop that speeds up the melt of the already precarious West Antarctic ice sheet. Stay tuned to find out what new maps reveal about the under-ice world of Antarctica, and how a tiny octopus can help us understand the South Pole’s ice-free past. ***** PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateTerra ***** Subscribe to PBS Terra so you never miss an episode! https://bit.ly/3mOfd77 And keep up with PBS Terra on: Facebook:   / pbsdigitalstudios   Tiktok:   / pbsterra   Instagram:   / pbsterra