Tree rings reveal patterns that can impact modern economies. In Mongolia, Nicole Davi’s team reconstructed 1,000 years of temperature changes, providing insight into recent warming and past volcanic activity. Ph.D. student Mukund Palat Rao and others studied the recent impact of dry summers and exceptionally cold winters on livestock survival. Photo by Gordon Jacoby
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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