air pollution9
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The State and Future of Congestion Pricing in China
To combat urban air pollution and traffic problems, some propose congestion pricing as a cost-effective policy to reduce pollution and improve productivity through improved travel speeds. Cities in China could implement this policy and ameliorate some of the negative effects of congestion-caused pollution. So why is congestion pricing dead on arrival in China?
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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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Data’s Power to Spur Environmental Progress
In January, 132 countries received their environmental report cards. The Environmental Performance Index has goaded leaders into action by letting them see their countries’ strengths and weaknesses compared to other countries.
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Cuts in Non-CO2 Pollutants May Slow Climate Change
Reducing Soot and Methane Would Bring Fast Results, Says Study
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Study Sees Little Dust Risk For Subway Workers
Compact Air Samplers Track Pollution in New York Tunnels
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Global Environmental Scorecard Gives U.S. Low Rank
Jan. 23, Davos, Switzerland – A new international ranking of environmental performance puts Switzerland at the top—and the United States 39th, last among the Group of 8 industrialized countries. The ranking, the 2008 Environmental Performance Index, was produced by a team from Yale University and the Columbia University Earth Institute’s Center for International Earth Science…
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
