Sustainability Policy and Management
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How Sustainable Are Reusable Cups? A New Tool Aims to Find Out
Columbia Climate School and Closed Loop Partners developed a novel impact assessment tool to calculate the carbon emissions and cost implications of a wide range of single-use and reusable packaging designs.
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The Transition to Environmental Sustainability is Underway, But It Won’t Be Easy
The transition to environmental sustainability will change the material basis of the world economy. This shift has begun, and its pace will be influenced by technology, capital, and public policy.
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Forging Partnerships for Resilient, Low-Carbon Electricity Systems
As cities begin to rebuild infrastructure ravaged by hurricanes, now is the time to adopt climate-resilient energy systems. Innovative collaborations between public and private stakeholders can help.

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
