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El Niño and Global Warming—What’s the Connection?
The United Nations has declared 2015 the hottest year since record keeping began. It was also a year marked by the occurrence of a “super” El Niño. Are the warming temperatures and El Niño connected?
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Faculty Profile: Wallace S. Broecker
Wallace Broecker passed away on Feb 19, 2019. Read his obituary: Wallace Broecker, Prophet of Climate Change To his colleagues, peers and admirers he is a genius and a pioneer, the Grandfather of Climate Science. And to his countless friends – most of whom also happen to be colleagues, peers and admirers – he is simply…
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Come on Mr. Mayor, Leave the Central Park Carriage Horses Alone
The mayor seems almost desperate to complete this carriage deal and move on, but in the process is simply giving his enemies more ammunition to do battle with him. In the process, he has managed to antagonize park advocates, pedicab workers, and good government advocates.
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Without the Montreal Protocol, More Intense Tropical Cyclones
Using one of the most advanced atmospheric computer models available, scientists compared our expected future with a scenario in which ozone-depleting substances had never been regulated.
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Student Profile: Victoria Wagner Mastrobuono
By combining her legal experience in her native Brazil with skills developed in the MPA in Environmental Science and Policy program, Victoria Wagner Mastrobuono hopes to work to promote tangible improvements in governance and more equitable and sustainable practices.
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A Prize-Winner Explains His Work
Nicolás Young studies glaciers and ice sheets, and how they’ve changed in the past. His work earned him the Blavatnik Award for Young Scientists last fall, which came with a $30,000 prize. You can hear him talk about his research in this new video, produced by the Blavatnik Family Foundation.
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Uncovering the Stories of Southern Africa’s Climate Past
Sidney Hemming is preparing to spend two months at sea studying global ocean circulation and southern Africa’s climate variability over the past 5 million years.

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


