Kostas Tsigaridis
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Air Pollution Cuts in East Asia Likely Accelerated Global Warming
A new study finds that some forms of air pollution in the atmosphere have helped shade the Earth’s surface from the sun’s energy.
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Rocket Launches Are Proliferating. What Is This Doing to the Atmosphere?
What goes up in the form of rockets and their payloads must eventually come down in the form of launch emissions and objects falling out of orbit.

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
