climate science24
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What Does El Niño Mean, in 3.4 Seconds
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?”
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It’s Beginning to Look Not a Lot Like Christmas
Much of the eastern two-thirds of the United States was balmy on Christmas Day, with high temperatures more than 20°F above average from Texas to Maine. According to NOAA, 789 daily high temperature records were tied or broken on Christmas Eve and Christmas Day in the continental United States. What’s behind this unusual weather?
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New App Explores Ice and Sea Level Change Through Time
Lamont-Doherty Scientists Create ‘Polar Explorer: Sea Level’
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Sea Level Rise: How Much, How Fast?
By studying modeled climate evidence from the last interglacial period, the team concluded that the warming going on today risks setting off “feedbacks” in the climate system.
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World Wildlife Fund, Earth Institute Form New Partnership
The World Wildlife Fund will collaborate with the Earth Institute’s Center for Climate Systems Research to advance adaptation to the impacts of climate change around the globe. The partners will create new ways of generating climate risk information and embedding it into the World Wildlife Fund’s conservation and development planning, policies and practice.
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Conversations with a Climatologist
Tony Barnston, a scientist at the International Research Institute for Climate and Society, took a few hours out of his day and answered questions on a Reddit “Ask Me Anything” session.
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What Everyone Should Know About Climate Change
Young scientists sum it up: The climate is changing. We’re causing it. It’s going affect everyone, and be expensive. But we can do something about it. Watch the video…
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The Paris Climate Summit: Resources for Journalists
Many experts at Columbia University’s Earth Institute are attending or closely watching the Paris climate summit. These include world authorities on climate science, politics, law, natural resources, national security, health and other fields, who can offer expert analysis to journalists. Here’s a guide to resources that journalists covering the summit can tap.
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In 2015: Hot, Wet and Opinionated
This year is shaping up to be the warmest year on record since 1880, according to new data from the National Oceanic and Atmospheric Administration. And, perhaps not so coincidentally, a new poll says more people in the United States are coming around to the view that climate change is happening.

Congratulations to our Columbia Climate School Class of 2026 and all of our 2026 Columbia University graduates! Learn more about our May 15 Climate School Class Day celebration. 💙 #Columbia2026 #ColumbiaClimate2026
