State of the Planet

News from the Columbia Climate School

What Everyone Should Know About Climate Change

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The Science, Revisited

The climate is changing. We’re causing it. It’s going to affect our lives and our livelihood, if it isn’t already. It’s going to be expensive. But we can do something about it.

That’s how a group of young scientists at a conference in 2013 summed it up. This video, shot by climate scientist William D’Andrea of the Lamont-Doherty Earth Observatory, explains in the simplest terms possible what we ought to know about climate change, and why we should care.

This is one in a series of posts looking back at some key State of the Planet stories about climate science. The original post about D’Andrea’s project, with a second video, is here.

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Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

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

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