The natural world is sending urgent distress signals, and a remarkable group of scientists and conservationists are answering the call.
Miles O’Brien joins an international scientific expedition aboard an icebreaker sailing to the Thwaites Glacier in West Antarctica, the so-called Doomsday Glacier, which holds enough ice to raise global sea levels by 10 feet and is collapsing faster than any glacier on Earth.
O’Brien embeds with researchers racing to gather data never-before-collected and explores one of the most controversial proposals in climate science: building a massive underwater sea curtain to hold back the warm ocean currents eating away at the ice.
The science is hard, the setbacks are real and the stakes could not be higher. But the people doing it refuse to give up.









