Earth Sciences20
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Study Shows Forests May Take in Far More Toxic Mercury Than Thought
Atmospheric mercury in gaseous form appears to be adding heavily to the load.
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Searching for Faults From Afar
Researchers are using ocean-bottom and land-based seismometers to record the R/V Marcus Langseth’s soundings from afar, to better understand the potential impacts of large earthquakes in the Cascadia region.
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Lamont-Doherty Earth Observatory: Milestones in Climate Science
Much of the modern understanding of climate change is underpinned by pioneering studies done at Columbia University’s Lamont-Doherty Earth Observatory. Here’s a timeline of significant studies.
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Collecting More Than Just Seismic Data Along the Cascadia Fault
While researchers search for a megathrust fault off the Pacific Northwest coast, they are also helping to map the seafloor in high resolution and detect underwater methane seeps.
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New Study Helps to Explain ‘Silent Earthquakes’ Along New Zealand’s North Island
Underwater mountains may help to dampen movements along faults that otherwise have the potential to generate large earthquakes.
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Looking Out for Marine Mammals
When using sound to search for an undersea fault, researchers must take special precautions to protect dolphins, whales and other vulnerable species.
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Seismic Data on Deck: Sounding for the Cascadia Megathrust Fault
Using sound and a 7.5-mile-long streamer towed behind the boat, scientists can collect a tremendous amount of data from under the seafloor.
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Searching for the Megathrust Fault at Cascadia
Researchers have set sail to find and map a fault that causes giant earthquakes in the Pacific Northwest.
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Scientists Track the Sudden Disappearance of an Antarctic Ice-Shelf Lake
A rarely seen phenomenon may not bode well for the future survival of the ice.
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
