El Niño-Southern Oscillation
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A Climate Change Signal in the Tropical Pacific
Research from the Lamont-Doherty Earth Observatory has the world’s climate scientists rethinking their models.
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Part of the Pacific Ocean Is Not Warming as Expected. Why?
Climate models predict that as a result of human-induced climate change, the surface of the Pacific Ocean should be warming. But one key part is not.
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Does the El Niño Southern Oscillation Actually Matter for Food Security?
And why should we care what causes a drought?
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Webcast Today: Rich and Poor, and the Essence of El Niño
How does El Niño work, and how does it affect our climate, food supplies and water availability? The two men whose scientific work has been key to solving these puzzles will be honored Wednesday with the Vetlesen Prize, marking a major achievement in Earth sciences. And this afternoon, they’ll have something to say about it…
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Scientists to Reap Ice From Indonesia High Peak
A Grueling Trek, a Fast-Melting Glacier, and Vital Climate Signs
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Study Reconstructs Asia’s Most Devastating Droughts
Key to Understanding Monsoon and Climate’s Impacts
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‘Killer’ Southeast Drought Low on Scale, Says Study
Others Were Far Worse; Population, Planning Are the Real Problems
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
