climate science6
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Fossil Leaves Show High Atmospheric Carbon Spurred Ancient ‘Global Greening’
Scientists studying leaves from a forest that stood during a warm period 23 million years ago have for the first time linked high levels of atmospheric carbon dioxide with increased plant growth, as well with the high temperatures of the time.
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Treading on Shrinking Ice
In a new book, glaciologist Marco Tedesco takes the reader on a personal journey through his sometimes dangerous work.
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Groundbreaking Project Will Drill Into Bedrock Below Greenland Ice to Understand Past and Future Melting
GreenDrill promises to reveal the ice sheet’s past in unprecedented detail and enable more accurate predictions of how it may add to rising seas in the 21st century.
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Anillos de Crecimiento de los Árboles Revelan Aumento sin Precedentes en Extremos Climáticos en Sudamérica
Un nuevo Atlas Sudamericano de Sequía revela que las sequías severas expandidas y los períodos inusualmente húmedos sin precedentes han ido aumentando desde mediados del siglo XX.
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Tree Rings Show Unprecedented Rise in Extreme Weather in South America
A new South American Drought Atlas reveals that unprecedented widespread, intense droughts and unusually wet periods have been on the rise since the mid-20th century.
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Coronavirus and Wildfires Combine to Pose Potential Threat to Indigenous Lives and Lands
But experts say it’s not too late to reduce the most serious effects of these compound issues.
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A New Primer on Climate Change Science
A new primer lays out the basics of climate science in compact form.
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Potentially Fatal Combinations of Humidity and Heat Are Emerging Across the Globe
A new study has identified thousands of incidents of previously rare or unprecedented extreme heat/humidity combinations in parts of Asia, Africa, Australia, South America and North America, including in the U.S. Gulf Coast region.
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Interactive Map: Daily Maximum Wet-Bulb Temperature
View an interactive world map that shows where extreme, sometimes potentially fatal, mixtures of heat and humidity are emerging across the globe.

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
