New York City21
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When the World Ended in Ice
A mile or so of glacial ice covering much of North America and plowing down from the north once terminated in the New York metropolitan area, at a front stretching roughly from exit 13 on the New Jersey Turnpike (Rahway), on across southern Staten Island, the Bensonhurst neighborhood of Brooklyn, and northeastward through Long Island. But exactly when that ice started…
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Turning Concern into Action: 12 Ways to Combat Climate Change
With the incidence of extreme weather on the increase, concern about global warming is also growing. This concern needs to be turned into action—whether local, regional or national. Here are a dozen ways to take action.
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Students. Saturday. Science?
It’s a Saturday morning, and most kids between the ages of 12 and 14 are sleeping in, off to rehearsals or sports team practice, or grudgingly helping with household chores. At Columbia University, a group of middle-school students are eagerly engaging in the scientific method.
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An Interactive Map of Scientific Fieldwork
Earth Institute scientists explore how the physical world works on every continent — over and under the arctic ice, in the grasslands of Mongolia, on volcanoes in Patagonia, over subduction zones in Papua New Guinea, and on the streets of New York City.
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From Sendai to Rio: A Call for Action
The people living on the northeast coast of Japan had learned to expect large earthquakes. But despite being one of the best-prepared nations, they were caught off-guard by the force of the March 11, 2011, earthquake and tsunami that devastated their coastline and led to the meltdown of reactors at the Fukushima nuclear power plant.
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A Trip Along the High Line
The Highline, a park built on an old rail line on the lower West Side of New York City, pays homage to the area’s industrial past while providing locals and tourists alike with a place for repose.
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Composter Puts College Food Waste in Its Place
Columbia has welcomed a composting machine to campus, a first at a New York City university. Accepting food scraps, such as banana peels, coffee grounds and egg shells, the composter will provide a way to recycle the urban campus’s food waste while also serving as an educational tool.
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New York Roofs: Brighter, Whiter, Cooler
The results are in for the first study to systematically measure the effects of the city’s fledgling effort to introduce more reflective rooftops in order to reduce cooling costs and the overall heat burden on the city.
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Power Play: an Energy Map of New York City
A new interactive, color-coded map created by a team at Columbia’s engineering school allows viewers to pinpoint and compare estimated energy usage, building lot by building lot, throughout New York City.
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
