Last Glacial Maximum
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Crater Beneath Greenland Glacier Is 58 million Years Older Than Previously Thought
Researchers discovered that a meteorite crater beneath the Hiawatha glacier is much older than previously thought, leaving questions regarding its impact on global climate.
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Did New Zealand Dust Influence the Last Ice Age?
Bess Koffman, a postdoctoral researcher at Lamont-Doherty Earth Observatory, recently traveled to New Zealand to collect dust ground-up by glaciers during the last ice age. In this photo essay, she explains how she collected the dust, what analysis looks like in the lab and what she hopes to learn.

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
