climate change91
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Earth Observation Science, Public Policymaking, and the Trump Administration
We do not know enough about our planet and the impact of human technology on its basic systems. It is beyond idiotic to think we can grow our population and consumption this much, this quickly, and have no impact. But it is also foolish to overstate what we know and ask policymakers to invest trillions…
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Photo Essay: Where the Trees Meet the Tundra
Due to warming climate and increasing human exploitation, far northern forests and the tundra beyond are undergoing rapid changes. In northern Alaska, scientists from Columbia University’s Lamont-Doherty Earth Observatory and other institutions are studying the responses of trees at the very edge of their range.
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Where Trees Meet Tundra, Decoding Signals of Climate Change
In northern Alaska’s Brooks Range, the earth as most of us know it comes to an end. The northern tree line-a boundary that circles all of earth’s northern landmasses for more than 8,300 miles, and forms the planet’s biggest ecological transition zone–runs through here. Scientists from Columbia University’s Lamont-Doherty Earth Observatory are studying how climate…
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Climate Change Under Trump: A Q&A with Michael Gerrard
For those who favor strong action on climate change, the election of Donald Trump is creating plenty of anxiety and concern. Will Trump set our efforts to curb climate change back? How can those who are concerned about climate change best fight back?
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The Domino Effect
Ice shelves can behave like dominos. When they are lined up and the first one collapses it can cause a rippling effect like dominos. We have seen this with the Larsen Ice Shelves. Named in series, the Larsen A, B and C shelves extended along the northeastern edge of the West Antarctic Peninsula, and covered…
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Cities: the Vanguard Against Climate Change
Cities are leading the fight against climate change. Here’s what some of the most forward-looking ones are doing.
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How to Prep a City for Climate Change
Cities around the world already have begun responding to climate change, and a new report from the Earth Institute provides a deep analysis about the risks they face and a detailed look at what some cities are doing about it.
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Lessons of Climate Resilience in New York City
The Earth Institute hosted a panel focused on how New York City, and other cities like it, can take steps to become stronger and more resilient in the face of climate change.
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At the Jersey Shore, Signs of a Comet, and a Climate Crisis
Do 55-Million-Year-Old Deposits Hint at Cause of an Abrupt Change?
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
