Inside Antarctica's Doomsday Glacier

Overview

Thwaites Glacier is melting faster than any glacier on Earth, and its collapse could raise global sea levels by feet, not inches. Miles O’Brien sails to Antarctica aboard a Korean icebreaker with scientists drilling through 3,000 feet of ice to reach the water below and explore a radical idea: an underwater curtain that might buy the world some time before the “Doomsday Glacier” gives way.