Climate301
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Researchers Confirm Role of Massive Flood in Climate Change
Flood of fresh water disrupted ocean circulation and Earth’s climate; simulations validated by climate proxy record
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Second GROCC Meets Amid Changing World
More than 200 participants from nearly 150 corporations and other institutions from around the world met November 14 and 15 at Columbia University for the second session of the Global Roundtable on Climate Change (GROCC). With 2005 on pace to becoming the warmest year on record, as well as the most active for hurricanes, and…
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The IRI Becomes The International Research Institute for Climate and Society
In October 2005, the Trustees of Columbia University changed the name of the International Research Institute for Climate Prediction to better reflect the work of the Institute. The IRI develops and implements strategies to reduce society’s vulnerability to climate risk. It partners with local institutions to best understand needs, risks and possibilities. The IRI supports…
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Answers About the Earth’s Energy Imbalance by James E. Hansen, Director of the Goddard Institute for Space Studies
Below are answers to typical questions about this research topic and its implications provided by James E. Hansen, director, NASA’s Goddard Insittute for Space Studies. Hansen was lead author on a paper published by Science in April 2005 on this topic. What is the direct significance of the energy imbalance found by the authors in…
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Devastating Droughts in the American West Not Isolated Events
Droughts that last several years are a recurring feature of the American West. They are also potentially costly natural disasters with impacts ranging from declining agricultural production, reduced water availability, increased forest fires, variable river flows, and declining fisheries. The Dust Bowl drought of the 1930s, which was memorialized in some of the greatest works…
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