Arctic3
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Treading on Shrinking Ice
In a new book, glaciologist Marco Tedesco takes the reader on a personal journey through his sometimes dangerous work.
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A Sustainable Arctic Has to Include Indigenous Groups
Assimilation and colonization are still happening in our own backyard.
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Increasingly Mobile Sea Ice Means Arctic Neighbors May Pollute Each Others’ Waters
The movement of sea ice between Arctic countries is expected to significantly increase this century, raising the risk of more widely transporting pollutants like microplastics and oil, according to new research.
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Ozone-Depleting Substances Caused Half of Late 20th-Century Arctic Warming, Says Study
A study finds that ozone-depleting substances caused about a third of all global warming from 1955 to 2005, and half of Arctic warming and sea ice loss during that period.
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Northern Peatlands Contain Twice as Much Carbon as Previously Thought
New findings double potential emissions from these areas, with big implications for climate modeling.
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Photo Essay: Living on the Ice in Juneau, Alaska
We’re developing a technique that uses ice-penetrating radar to measure how quickly snow turns to ice. To take our measurements, we needed to camp out in the Juneau icefields for a few weeks.
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Why Cry for the Cryosphere?
A new book paints a daunting and detailed picture of earth’s natural ice under threat, and explains why what happens in the Arctic doesn’t stay in the Arctic.
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It’s Raining on the Greenland Ice. In the Winter.
Rainy weather is becoming increasingly common over parts of the Greenland ice sheet, triggering sudden melting events that are eating at the ice and priming the surface for more widespread future melting, says a new study.
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Assessing the Impact of Declining Arctic Sea Ice on Extreme Weather
Yutian Wu received funding from the Center for Climate and Life to investigate whether the loss of Arctic sea ice promotes severe weather over North America.
COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
