marine ecosystems
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Cordilleran Ice Sheet Retreat Caused Volcanic Eruptions, Deoxygenation Events 10,000 Years Ago
New research shows that retreat of an ice sheet in the Pacific Northwest led to many volcanic explosions and ocean areas with low oxygen that threatened the health of marine ecosystems.
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Pesticides and Industrial Pollutants Found in Snow Atop Arctic Glaciers
The long journey of these compounds — likely originating in the United States and Eurasia — points to the near-global reach of industrial and agricultural pollution.
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By 2100, Climate Change Could Alter Key Microbial Interactions in the Ocean
The warmer, more acidic waters caused by climate change influence the behavior of tiny marine organisms essential to ocean health.
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Under the Sea Ice, Behold the Ancient Arctic Jellyfish
A video reveals mature jellyfish under the Arctic sea ice, where they aren’t supposed to be.
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Antarctic Scientists Honor Obama by Collecting Climate Data
Researchers studying the West Antarctic Peninsula marine ecosystem will recognize President Obama’s efforts to combat global warming by collecting climate data at an oceanographic station they named for the 44th president.
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Project Maps the Chemistry of the World’s Oceans
Until recently, too little data existed about the distribution of trace elements and nutrients in the oceans to provide a global picture. In 2002, a group of scientists connected with Columbia University’s Lamont-Doherty Earth Observatory set out to fill those gaps.
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World Surf League Teams Up with Columbia to Support Ocean Science
New philanthropy takes an innovative approach
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With Climate, Fertilizing Oceans Could be Zero-Sum Game
In Pacific, Added Iron May Not Pull Carbon From Air as Thought
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In Gulf of Mexico, Microbes Thrive Above Natural Oil Seeps
New insight into how plankton and oil interact
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
