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Under Arctic Ice: Watch the Video

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This video depicts the activities of the LDEO Switchyard field team, which deploys annually and uses ski-equipped aircraft to reach a series of sample sites between the North Pole and Ellesmere Island in Canada.

After landing, a hole is drilled through the ice, and the sampling system is lowered through the hole to a depth of about 700 meters. The sampling system (the thin hole rosette) which was designed and built at the Lamont-Doherty Instrument Lab, allows the LDEO field team to examine the water as the assembly descends and to collect water samples for later analysis when interesting properties are observed. This work is supported by the US National Science Foundation.

This video was shot by Switchyard team member Dan Greenspan, who is a researcher at the Applied Physics Laboratory at Johns Hopkins University. Check out his blog, and his recent entry: “Traveling to the North Pole, Part 10: Eclipse, with Wolves.”

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Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

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