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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.
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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.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
