MTA
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How Do We Fix the Hellish Heat of the New York City Subway System?
It’s time to treat subway heat like the climate adaptation issue and public health hazard that it is.
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Tackling Crowd Management in Subways During Pandemics
Columbia researchers are working with the MTA to develop machine learning and traffic models to optimize traffic flow during pandemics.
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Congestion Pricing is Stuck in New York’s Political Traffic
The subway system requires new signals, switches, cars, and expanded routes. While congestion pricing can’t pay for all of that, it can help.
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Let’s Build a Train From Brooklyn to Queens and Someday to the Bronx
Let’s build that interborough train line and once it’s up and running, build a second phase to the Bronx.
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New York’s Overly Political Approach to Mass Transit
The time for a comprehensive fix for this region’s mass transit is long overdue.
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New York Is Still Feeling the Effects of Hurricane Sandy, Five Years Later
In October 2012, Sandy devastated large swaths of the city with floods and fire. How well have we recovered? And will we be ready for the next big storm?

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


