sediment cores2
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Tools of the Trade: A Peek Inside the Bog-Coring Lab of Dorothy Peteet
What’s a bog corer? And how do seeds help scientists learn about the earth’s past? A paleoecologist explains the most important items in her toolkit.
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John Imbrie, a Pioneer of Paleoceanography
Imbrie, a former head of the Department of Geological Sciences, helped confirmed connections between changes in Earth’s orbit and the timing of the ice ages and was a co-founder of CLIMAP, an international effort to use sediment cores to map Earth’s climate at the height of the last ice age.
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Walter Pitman and the Smoking Gun of Plate Tectonics
“We had this magic key, this magic magnetic profile,” Pitman said. “We were able to date it and eventually use it not only as a tool that proved continental drift but a tool by which we could actually reconstruct the pattern of drift, that is the relative position of the continents, and the actual timing…
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As Dead Sea Dries, Drilling Shows It’s Not the First Time
Scientists Delve Deep Into Bed of Historic Inland Sea
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Scientists Drill Deepest Hole off New Zealand
Layers of sand tell of fluctuations in climate, sea level
Congratulations to our Columbia Climate School Class of 2026 and all of our 2026 Columbia University graduates! Learn more about our May 15 Climate School Class Day celebration. 💙 #Columbia2026 #ColumbiaClimate2026
