Our climate reporter Raymond Zhong is in Antarctica with scientists from around the world. One of the primary experiments hinges on being able to camp on the Thwaites Glacier to drill into it and measure how fast it’s melting. Experienced guides explain the biggest safety concerns — crevasses — and the tools they use to detect them. Video by Raymond Zhong, Chang W. Lee, Christina Thornell, Leila Medina and David Seekamp #nytantarctica #antarctica #camping #thwaitesglacier