sewage treatment
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Building and Financing the Infrastructure of a Sustainable New York City
The city’s environmental sustainability effort spans many agencies and needs control and coordination by a senior official with experience and clout.
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An Environmental Agenda for NYC’s New Mayor
Our new mayor should let our environmental actions do the talking for the next eight years. It would be a refreshing change.
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Is the Hudson Swimmable? New Program Aims to Test the Waters
Ongoing Work By Scientists Will Supply Data to the Public
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
