Paris Agreement2
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Developing Countries Fuel Momentum For Ambitious Climate Targets
A group of the least developed countries have held a climate summit to showcase their ambitious plans and hold developed nations to account.
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As of Today, the U.S. Is No Longer Part of the Paris Agreement
Whether or not we rejoin — and thereby do our part to prevent the worst impacts of climate change — depends on the outcome of the election.
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The Climate Talks Struggle While California Forges Ahead
The contrast between the climate talks in Poland and progress by California is illuminating and provides a clear indication of how the climate crisis will actually be addressed.
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A World Warmer By Just 2°C Will Be Very Different From Today
Past warm periods indicate that even the Paris Agreement’s limits on global warming could have catastrophic consequences over the long-term.
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How the U.S. Might Fulfill Its Paris Pledge Without the White House
States, cities, and businesses are trying to pick up the federal government’s slack to fight climate change. How big of a difference can they make?
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
