Climate104
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An Atomic Catch 22: Climate Change and the Decline of America’s Nuclear Fleet
Nuclear energy currently generates a majority of America’s carbon-free electricity. It is an energy source that we cannot afford to keep — and also cannot afford to lose.
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Shrinking Snowcaps Fuel Harmful Algal Blooms in Arabian Sea
Driven by changing climate, a uniquely resilient organism is taking over the Arabian Sea, disrupting food chains, fisheries, oil refineries and water desalination plants.
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How Mangos Got Me Hooked on Climate Change
A student writes about how a moment of enlightenment changed her career path.
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How Catastrophic Floods May Have Carved Greenland’s ‘Grand Canyon’
In a new study, researchers propose a mechanism for how mega-canyons under northern Greenland’s ice sheet formed: from a series of catastrophic outburst floods that suddenly and repeatedly drained lakes of meltwater.
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Project Takes A New Approach to Gauging New York City’s Emissions
Estimates say the city releases about 50 million tons of carbon a year, but no one has actually measured it. A new project is trying to change that.
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The Climate Consequences of Rolling Back Energy Efficiency
If allowed to stand, the rollbacks will result in enormous and needless increases in greenhouse gas emissions — and higher electric bills.
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Waterfront Development Added Billions to Property Values Exposed to Hurricane Florence
Rapid development in flood-prone zones during recent decades helped boost the amount of property exposed to the 2018 hurricane substantially, a new study says.
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What the First Earth Day Achieved
And what we can learn from its success.
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Beautiful Planet: Earth Institute Photos From Around the Globe
This year marks the 50th anniversary of Earth Day. To celebrate, we’re sharing images of places and projects around the world that highlight our planet’s incredible beauty.

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
