explainers6
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You Asked: What Determines the Oxygen and CO2 Levels in Our Atmosphere?
An Earth Institute climate researcher breaks down why our atmosphere is the way it is, how it’s changed over time, and what the future may hold.
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You Asked: What Are the Most Eco-Friendly Garbage Bags?
An Earth Institute staffer gives advice on alternative trash bag options and how reduce your need for trash bags altogether.
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You Asked: Why Do We Know More About the Moon Than Our Own Oceans?
An Earth Institute oceanographer answers this deep question from a reader as part of our Earth Month Q&A on Instagram.
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Your Earth Questions, Answered
In celebration of Earth Month and Earth Day, our scientists are tackling reader questions on science and sustainability.
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What Would Happen if the Earth Were Actually Flat?
You could say goodbye to the atmosphere and GPS navigation, to start.
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
