Climate270
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Wally Broecker: 50 Years of Climate Science Innovation
Since arriving at Lamont-Doherty Earth Observatory in 1952, for a college summer internship, Wally Broecker has come up with some of the most important ideas in modern climate science. He was one of the first researchers to recognize the potential for human-influenced climate change, and to testify before Congress about its dangers. He helped pioneer…
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New Book Explores Link Between Climate and Ocean Currents
Wallace Broecker is a climate scientist at Lamont-Doherty Earth Observatory who has helped shape our understanding of how the ocean moves heat around the globe, and how this so-called “great ocean conveyor” can switch the climate to a radically different state. Many scientists used to think that only periodic changes in earth’s orbit—so-called Milankovitch cycles–…
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New Program Tackles Climate Threats to Food Security
A new multimillion dollar research program by the Consultative Group on International Agricultural Research aims to alleviate climate-related threats to the food security, livelihoods and environment of people living in the developing world. One of the key intellectual forces behind this initiative has been the IRI‘s Jim Hansen. He’ll be leading efforts within the program…
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Studying the Impacts of Climate on High-Altitude Ecosystems
Columbia University researchers Laia Andreu Hayles and Daniel Ruiz Carrascal traveled to Colombia last month to investigate the impact of climate on high-altitude ecosystems in the Andes. Supported by the Lamont-Doherty Earth Observatory Climate Center, Andreu and Ruiz are exploring the potential of several high-altitude tree species to reveal information about past climate variability and…
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Did Climate Influence Angkor’s Collapse?
Evidence Suggests Changing Environment Can Bring Down a Civilization
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Scientific Realism and Climate Change: Seminar with Martin Skrydstrup
Martin Skrydstrup is looking at science from a different perspective. By studying the scientific process anthropologically, he hopes to help reduce public confusion and mistrust around Climate Change science.
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Ideas for the Sustainable City: Green Buildings
On March 23, the Environmental Protection Agency released a list of the 40 cities with the highest percentage of energy-efficient buildings. While Los Angeles, Washington and San Francisco made the top three, NYC came in at number ten. When we think about carbon emissions, we often think of cars, trucks, factories, and power plants. We think…
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Looking Back on Winter: Part I
The arrival of spring in temperate climates means more hours of daylight, showers and flowers. Despite the general mood improvement from the dark days of winter, we should not be quick to forget the controversies surrounding this past season. Winter 2010, deemed by media outlets as Snowmaggedon and Snowpocalypse, was the snowiest season on record…
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State of the Planet 2010: Join the Global Conversation
What is the current state of the planet? How do we move forward on a global climate deal? On March 25, The Earth Institute, Columbia University; The Economist; and Ericsson will bring together some of the world’s most influential thinkers to propose innovative solutions to these and other critical questions at our biennial State of…
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