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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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Climate Mobilization and a Sustainable New York City
As New York City evolves into a sustainable city, the experience we have in transforming our old energy system to a new one will be valuable, and the transformation itself will make this very old place newer than it looks.
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Things You Can Do to Make A Difference (And Have Fun) on Earth Day
Looking for ideas about how to get out, get involved and make a difference this Earth Day? Don’t worry, we’ve got you covered.
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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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Zero-Carbon Economy is Within Reach, Says Climate Economist
Nicholas Stern is optimistic that we can create a zero-carbon world economy in the coming decades. What he’s worried about is whether we will, he said in a recent talk.
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MESSENGER Data Reveal That Mercury’s Inner Core Is Solid
The new findings offer clues about how the solar system formed and how rocky planets change over time.
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Mah Sissoko: Integrating Sustainability with Finance
An alumna explains how the masters program in Sustainability Management has helped her career.
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Field Work Ends … For Now
Despite some unpredictable Antarctic weather, the final G-055 team member makes it off the ice.
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
