El Niño
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Study of Extreme Indian Rainfall Upends Conventional Wisdom
While El Niño often brings drought conditions to India, a new paper shows that it also increases the likelihood of devastating downpours in some of the country’s most heavily populated regions.
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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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El Niño Arrives, Unfashionably Late
In February, the long-predicted El Niño event in the Pacific began to finally take shape. Here’s what it could mean for precipitation levels over the next few months.
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Researchers Say an 1800s Global Famine Could Happen Again
The Global Famine was one of the worst humanitarian disasters in history, killing as many people as World War II. A new analysis suggests it could happen again, only worse because of climate change.
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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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What Caused the Great Famine?
Scientists are unraveling the driving forces of one of the worst environmental disasters in human history, in hopes of predicting and preparing for the next global drought.
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How Will La Niña Affect Winter in the U.S.?
This phenomenon can cause major changes in climate patterns. See what’s in store for your region.
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What’s in the Forecast and How Do We Know?
The Earth Institute’s International Research Institute for Climate and Society makes probabilistic forecasts for rainfall and temperature for the next six months. How does it do this?
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
