Lamont-Doherty Earth Observatory33
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How Climate Change Impacts Fall Foliage
Changing temperatures and precipitation can affect when the leaves change and how vibrant their colors blaze.
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You Asked: Dinosaurs Survived When CO2 Was Extremely High. Why Can’t Humans?
Our expert says: Although carbon dioxide levels have been much higher in the past, they generally increased slowly, giving plants and animals time to adapt. When the rate of climate change was staggeringly fast, like today, there were big problems.
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Catching the Next Eruption of Axial Volcano
Diary entries from a research expedition that deployed seismometers on the ocean floor in hopes of recording the next eruption of a submarine volcano.
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What Lies Beneath Melting Glaciers and Thawing Permafrost?
As the planet’s ice disappears, it’s exposing new surfaces, opportunities, and threats — including valuable mineral deposits, archaeological relics, novel viruses, and more.
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The Energy Transition Needs to Be Climate-Proofed
Increasingly extreme weather has the potential to derail renewable energy projects — but there are a few things we can do to keep moving forward.
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Columbia Climate School Postdoctoral Research Program Now Accepting Applications for 2023
The application deadline is October 31.
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Fast-Wasting Antarctic Glacier Lost Ice Even Faster in Past, Raising Concerns for Future
Some time in the past 200 years, Antarctica’s giant Thwaites Glacier saw a period of retreat much faster than even that observed in recent years. It could be a warning of rapid sea-level rise in the near future.
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Otters the Size of Lions Once Roamed the Earth
Enhydriodon omoensis dwarfed ancestors of humans who lived alongside it from 2.5 to 3.5 million years ago; the two species may have competed for food.
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How Is Climate Change Affecting Ocean Waters and Ecosystems?
Biological oceanographer Hugh Ducklow describes decades of work in far-flung places to understand the evolving ecology of the oceans. The picture is not always clear.

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.
