you asked4
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You Asked: How Can I Find Out the Carbon Footprints of Different Foods?
We look at research from the Earth Institute and beyond to answer questions about the impacts of beef, soy, and more.
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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.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
