State of the Planet

News from the Columbia Climate School

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  • You Asked: Can the Great Green Wall Stop the Sahara From Expanding?

    You Asked: Can the Great Green Wall Stop the Sahara From Expanding?

    A climate scientist answers readers’ questions about an initiative that would plant a vast wall of trees to combat the effects of climate change.

  • Our Newest SEE-U Field Site in Jordan

    Our Newest SEE-U Field Site in Jordan

    In partnership with Columbia’s Global Center in Amman, the Columbia University Middle East Research Center, undergraduate students of all majors have the unique opportunity to study ecosystems and environmental sustainability in Jordan.

Rainforest and Columbia campus collage banner with text "UN COP30, Belem, Brazil, Nov 10-21, 2025"

During COP30—the 2025 UN Climate Change Conference taking place November 10–21 in Belém, Brazil—experts from Columbia Climate School and Columbia University will be contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

  • You Asked: Can the Great Green Wall Stop the Sahara From Expanding?

    You Asked: Can the Great Green Wall Stop the Sahara From Expanding?

    A climate scientist answers readers’ questions about an initiative that would plant a vast wall of trees to combat the effects of climate change.

  • Our Newest SEE-U Field Site in Jordan

    Our Newest SEE-U Field Site in Jordan

    In partnership with Columbia’s Global Center in Amman, the Columbia University Middle East Research Center, undergraduate students of all majors have the unique opportunity to study ecosystems and environmental sustainability in Jordan.