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How Hard Is It to Dim the Sun?
Solar radiation management is gaining traction as a climate intervention—but new research warns that real-world constraints make it riskier and more uncertain than most models suggest.
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A New Study Indicates Forest Regeneration Provides Climate Benefits, but Won’t Offset Fossil Fuels
Effective climate policy must treat forest regeneration and emissions reductions as complementary strategies, not alternatives, according to a new paper.
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Archaeologist Kristina Douglass Named 2025 MacArthur Fellow
Douglass’s research uses lessons from the past to help communities understand how to adapt to climate change.
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A Blueprint for Survival: New EAT-Lancet Report Is a Sustainable Food Systems Roadmap
The much-anticipated second EAT-Lancet Commission on Healthy, Sustainable and Just Food Systems has been released, building on the landmark 2019 report that first defined the Planetary Health Diet.
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Study of Extreme Indian Rainfall Upends Conventional Wisdom
While El Niño often brings drought conditions to India, a new paper shows that it also increases the likelihood of devastating downpours in some of the country’s most heavily populated regions.
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Rings of Time: Seeking Clues to the Future in Urban Timber
Lamont scientists are working with lumber salvage companies to preserve old timbers from demolished structures that offer rich clues to climate data and human history.
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The Ocean Carbon Sink Is Ailing
Measurements analyzed by an international research team indicate the global ocean absorbed significantly less CO₂ than anticipated during the unprecedented marine heatwave in 2023.
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Tiny Giants: Marine Microbes’ Pivotal Role in the Ocean’s Future
These “invisible” organisms are key to the question of how much carbon the ocean can hold.
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Burned Amazon Forests Stay Hot and Stressed for Decades, Finds New NASA-Supported Study
Research indicates that fire alters tropical forests’ ability to tolerate climate stress and store carbon—a crucial role in global climate mitigation.
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
