Our climate reporter Raymond Zhong is on an expedition in Antarctica with scientists from around the world. Paul Anker, a drilling engineer, discusses the stakes, preparations and pressure of the mission to drill a half-mile-long hole in through the Thwaites Glacier to gather data from the waters below. Video by Raymond Zhong, Chang W. Lee, Christina Thornell, Jon Miller, Leila Medina and Stephanie Swart #nytantarctica #ice #penguins #travel #science