Climate220
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Forest Razing by Ancient Maya Worsened Droughts, Says Study
Human-Influenced Climate Change May Have Contributed to Society’s Collapse
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Polar Climate Change Education Partnership Receives $5.6 Million Grant
The Columbia Climate Center led PoLAR Climate Change Education Partnership receives a $5.6 million grant from the National Science Foundation (NSF), one of six awards under the Climate Change Education Partnership-Phase II program.
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Forecasting Climate’s Effects on Global Food Production
The worst drought to hit the U.S. in decades has already brought corn yields to a 17-year low and will almost certainly raise food prices. Wealth will soften the blow in the U.S., but in sub-Saharan Africa and South Asia, prolonged drought has often had deadly consequences. Is there a better way to anticipate climate’s…
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Preparing for a Future of Perpetual Drought
The Intergovernmental Panel on Climate Change projects that droughts will likely increase in central North America this century. How can we prepare for a future of perpetual drought?
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Cities Are Where the Action Is, Post-Rio
Representatives of the worlds’ cities came to Rio in June for a series of events focused on the problems pressing in on the burgeoning urban population. Mayors around the world already are working on solutions and came out of Rio with concrete commitments for the future.
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UN Secretary General Names EI Director Jeffrey Sachs to Lead Sustainability Project
The Sustainable Development Solutions Network will bring together public and private research centers to address some of the urgent social, environmental and economic problems raised during the recent Earth Summit in Rio de Janeiro.
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The New Climate Dice: The Odds Have Shifted to Hot
This year’s Midwest heat wave and some other recent extreme weather events are no fluke of nature, but a consequence of a warming planet, according to an analysis of climate data by NASA scientists.
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Cold Spell Gripped Europe 3,000 Years before ‘Little Ice Age,’ Says Study
Human civilization arose during the relatively balmy climate of the last 10,000 years. Even so, evidence is accumulating that at least two cold spells gripped the northern hemisphere during this time, and that the cooling may have coincided with drought in the tropics. Emerging research on climate during this Holocene period suggests that temperature swings…
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The Intersection of Population and Elevation Examined
This map shows the estimated number of people in 2010 living at different elevation levels across several Southern Asian countries. The database it’s taken from lets users without specialized geospatial training or software compare populations in various environmental contexts in different countries.
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