air quality3
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Spring 2016 Undergraduate Research Assistant Opportunities
The Earth Institute will offer nine research assistant opportunities for undergraduate students during the Spring 2016 semester.
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The Changing Face of Air Quality
Looking at regional differences in PM2.5 concentrations gives us a sense of the changing face of air quality throughout the world.
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Bad Ozone Days in Western U.S. Linked to Pacific Weather
A new study shows that ozone pollution in the western United States can be increased by La Niña, a natural weather cycle at the surface of the Pacific Ocean. The finding is the first to show that the La Nina-El Nino cycles directly affects pollution.
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Asthma Hot Spots Linked to Trucks, Low-Grade Heating Oil
New York Children Suffer Block by Block Depending on Soot Levels
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Bottom Up or Top Down? Another Way to Look at an Air Quality Problem
While not all countries have the financial wherewithal and capacity to deploy ground-based instruments for air-quality monitoring, and for some countries monitoring information is not available to the public, for example, through health advisories, another way exists to assess air pollution levels: through satellites.
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Kudzu Harms Air, Not Just Ecosystems, Says Study
Invasive Vine Said to Add Ozone in Southeastern U.S.

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
