particulate matter
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People Like to Breathe: The Importance of EPA’s New Air Particulate Proposal
In the United States, we need strong pollution control standards that are enforced carefully, precisely, and with a deep understanding of the pace of operational change that is feasible for a particular business or locality.
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You Asked: Does Carbon Capture Technology Actually Work?
We have the technology to capture and store millions of tons of carbon globally. Now all that’s lagging is the policy.
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What You Should Know About Air Quality Alerts
“It’s a code red day for ozone.” If you hear this on your local news, what does it mean? Are you at risk? Do you know what to do?
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Is City Biking Hazardous to Your Health?
As more and more people take to biking in the city, a new study will look at how much pollution bikers are exposed to, and what effects it might be having on their health.
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
