Science for the Planet2
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Science for the Planet: Why We Need Legal Frameworks for Carbon Dioxide Removal
Ocean-based techniques to remove carbon dioxide from the atmosphere could help the US and other countries reach their climate goals, but they need to be advanced in a safe, just and responsible manner, says climate law expert Romany Webb.
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Science for the Planet: Sinking Seaweed for Sequestration
This second video for Science for the Planet series explores the idea of sinking sargassum seaweed deep in the ocean, taking carbon with it.
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Science for the Planet: Why Marshes Must Be Preserved
While collecting sediment cores from a New York City coastal marsh, botanist and climatologist Dorothy Peteet explains how such ecosystems store massive amounts of carbon, but are under threat from sea-level rise.

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
