Climate248
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Climate Services event at COP-17
A side event hosted by the IRI at this year’s U.N. climate conference will discuss a new Climate Services Partnership.
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Farmers, Flames and Climate: Are We Entering an Age of ‘Mega-Fires’?
For millennia, people have set fires to clear land for cultivation, pastures or hunting; so-called slash-and-burn agriculture is still common across much of tropical Africa, Asia and South America. It has been a useful strategy–but …
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New York State May Soon Suffer Outsize Effects from Climate, Says Report
From Farms to Subways, Many Sectors Could Be Affected
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PhD. Ode to a Tree
“I was deeply saddened by the loss of one of our most beautiful trees on campus during the last storm. It had perfect symmetry and such a beautiful color display late in the fall,” wrote geochemist Martin Stute, after a highly unusual heavy October snow felled a 22-year-old Bradford pear at Lamont-Doherty Earth Observatory, where he…
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Winter Extremes: So Last Year?
What are the odds that this winter will be as snowy as the last two? Climate scientist Jason Smerdon and tree-ring scientist Rosanne D’Arrigo are working on an answer, looking at the long-term history of two important weather patterns—the North Atlantic Oscillation and La Niña state in the tropical Pacific—that similar to last year could…
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Trees on Tundra’s Border Are Growing Faster in a Hotter Climate
Measuring Techniques Improve—But Implications Are Not Certain
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Health Risks From Famine Likely to Persist
Video Short: IRI’s Madeleine Thomson discusses the short- and long-term health risks of the East Africa famine
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Asia’s Motown Meets Waterworld–The Global Water Supply Chain Crisis
Since July, an almost unceasing torrent of rain has soaked Thailand, flooding farms, roads, factories, and finally Bangkok itself, a city of some 12 million people; so far at least 500 people have died. To date the government has ordered evacuations of 12 of the city’s 50 districts, even as water continues to creep through…
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Monitoring Antarctica’s Changing Glaciers – No Longer Like ‘Watching Paint Dry’
By Kirsty Tinto & Mike Wolovick As little as a few decades ago you could ask a scientist what it was like to monitor the changing ice in Antarctica and the response might have been “Like watching paint dry” — seemingly no change, with no big surprises and not too exciting. Well times have changed.…

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