Earth Sciences62
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Almost Home, with Another 7 Million Years of Climate History
Science at sea isn’t easy, but the benefits are huge, writes Sidney Hemming in her final post from a two-month expedition that collected millions of years of climate history in the deep-sea sediment from off southern Africa.
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‘Popping Rocks’ and Robots
It turns out that studying lava flows at the bottom of the ocean uses many of the same methods as studying lava flows on other planets, writes Lamont’s Elise Rumpf.
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Finding Microfossils off Southern Africa
Expedition 361’s newest sediment cores brought up spectacular foraminifera—translucent, glassy and “very pretty” throughout the ocean sediment.
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A Surprise from the Zambezi River
Sidney Hemming and her team aboard the JOIDES Resolution got a surprise when they began taking sediment cores from their first river site off southern Africa—about 10 times more sediment than expected.
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Mozambique Core Brings Up 7 Million Years of Climate History
With calm seas, the JOIDES Resolution’s latest sediment core comes up with what appears to be a fantastic, cyclic climate signal that is continuous back 7 million years, writes Sidney Hemming.
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Attributing Extreme Weather to Causes—Including Climate Change
New research and more powerful computer models are advancing scientists’ ability to tease apart the forces that can worsen extreme weather. In a new report, a committee of the National Academy of Sciences that includes Columbia’s Adam Sobel assesses the young field of attribution studies.
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Pump Meltwater Back on Antarctica? Do You Have 850,000 Wind Turbines?
A new study that looked at the feasibility of lowering sea levels by pumping water onto icy Antarctica offers a warning about the costs today’s greenhouse gas emissions may be creating for future generations.
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We’re Headed for Mozambique!
After weeks of anticipation, permission arrived just in time to core off Mozambique. Sidney Hemming and her team of scientists aboard the JOIDES Resolution are excited about what they might learn from the ocean sediment.
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Slowly Moving to Protect the Environment
In some cases we do not understand the impact of human actions on the planet and we need to do more observation and analysis to understand those impacts. In other cases we don’t really know how to repair the damage once it has been done.
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
