CO2
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For Wetland Plants, Sea Level Rise Stamps Out Benefits of Higher CO2
The beneficial effects of rising CO2 for plants disappear under flooding, a 33-year field experiment reveals.
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Beyond Climate Change: What Happens Once We Control the Global Thermostat?
We’re developing the tools to slow and reverse climate change. If we succeed, our species will be managing the planet’s atmosphere indefinitely.
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How Exactly Does Carbon Dioxide Cause Global Warming?
CO2 molecules make up only a small percentage of the atmosphere, but their impact on our climate is huge. The reason comes down to physics and chemistry.
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You Asked: How Does Carbon Dioxide Get So High Up Into the Atmosphere?
If CO2 is heavier than oxygen, why doesn’t it stay near the ground? The short answer: Earth’s atmosphere isn’t like a sealed bottle of wine.
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You Asked: If CO2 Is Only 0.04% of the Atmosphere, How Does it Drive Global Warming?
Short answer: A little bit goes a long way.
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Capturing Carbon’s Potential: These Companies Are Turning CO2 into Profits
Researchers and businesses are finding innovative ways to use carbon dioxide captured from power plants or the air.
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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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Why Thawing Permafrost Matters
As the Arctic warms, the unfreezing of permafrost poses a threat to the planet.
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The Carbon Vault
The skin of the Earth is the color of tar, Ridged, freshly healed like the seams of a scar. Through salt-spattered sky, a gray-winged gull sails; Steam gently rises, the island exhales.
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
