State of the Planet

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What Does El Niño Mean, in 3.4 Seconds

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This year’s strong El Niño event—the warming of east Pacific waters that drives rainfall and drought around the globe—already has had a big impact, and it’s likely to continue for awhile, though some effects may have peaked. Still ongoing: a wet winter in the southern U.S., the mid-Atlantic coast and California.

Scientists at the International Research Institute for Climate and Society took a moment from their work (a very brief moment) to answer the question, “What does El Niño mean?” The sum of their comments, with a dose of humor, paints an interesting picture of the climate phenomenon.

You can learn more about El Niño at the institute’s El Niño Essentials and El Niño Impacts web pages.

And to watch researcher Tony Barnston deliver the December forecast, link up here.

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Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

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