urban sustainability3
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$3.8 Million Raised for Millennium Cities Initiative
The Earth Institute successfully completed a $1.9 million landmark challenge grant, awarded by the Tides Foundation, to benefit the Millennium Cities Initiative (MCI). Because of the Tides challenge and our generous donors, a total of $3.8 million has been raised to support the project’s work to help targeted mid-sized cities across sub-Saharan Africa promote sustainable…
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Researchers From Around the World Converge on New York to Link Climate Change Science with Urban Policymaking Efforts
Urban Climate Change Research Network to be officially launched at May 10-11 Conference
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Environmental Thesis Project: Green Roofs Could Help NYC Sewage System
Using a computer model she built herself, Debra Tillinger, an environmental science major, came up with a prediction as to how much better New York City’s sewage system would function if plant-covered roofs throughout the city slowed the flow of rainwater to the sewers. Tillinger’s research, which was part of her theses project for her…

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