State of the Planet

News from the Columbia Climate School

Ellesmere Island

  • 400 ppm World, Part 1: Large Changes Still to Come

    400 ppm World, Part 1: Large Changes Still to Come

    Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.

  • Under Arctic Ice: Watch the Video

    Under Arctic Ice: Watch the Video

    The 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.

Overhead view of Columbia campus with text Columbia Climate School Class Day 2026: Congratulations Graduates

Congratulations to our Columbia Climate School Class of 2026 and all of our 2026 Columbia University graduates! Learn more about our May 15 Climate School Class Day celebration. 💙 #Columbia2026 #ColumbiaClimate2026

  • 400 ppm World, Part 1: Large Changes Still to Come

    400 ppm World, Part 1: Large Changes Still to Come

    Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.

  • Under Arctic Ice: Watch the Video

    Under Arctic Ice: Watch the Video

    The 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.