air pollution
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Air Pollution Cuts in East Asia Likely Accelerated Global Warming
A new study finds that some forms of air pollution in the atmosphere have helped shade the Earth’s surface from the sun’s energy.
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Study Finds Subway Pollution Is Too High—With a Disproportionate Effect on Black and Hispanic Riders
Columbia Climate School researcher Shams Azad analyzed the air pollution on subway platforms and trains in New York City.
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Planting Some Tree Species May Worsen, Not Improve, NYC Air, Says New Study
New York is planting large numbers of trees in order to improve the city’s livability. But emissions from some species interact with tailpipe and building pollutants to form smog.
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From ‘Asthma Alley’ to Green Spaces: A Field Trip with South Bronx Unite
MPA-ESP students learned about the complex environmental justice issues at play in the South Bronx, and how community groups are advocating for change.
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The Endless Shame of Louisiana’s Cancer Alley
In a nation that invented national environmental policy over half a century ago we now see the spectacle of part of America being investigated by an international NGO seeking to protect the human rights of victims of toxic pollution.
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The Regulation of Air Pollution That Crosses State Borders
Our world and our economy are becoming more technologically complex and interconnected; anticipated impacts have become routine, and our need for agile and responsive regulation is growing.
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Tackling Severe Air Pollution in Africa
An atmospheric scientist has been working to measure and mitigate a longtime health crisis afflicting much of the continent.
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How Wildfire Smoke Can Travel Thousands of Miles, and How to Protect Yourself
Columbia Climate School experts comment on the dangerous air pollution from Canadian wildfires.
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Indigenous South Americans Far More Likely to Die From Wildfire Smoke, Study Says
Smoke from wildfires is a health threat to everyone, but Indigenous people in South America are especially vulnerable due to a number of factors.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
