tree rings
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Rings of Time: Seeking Clues to the Future in Urban Timber
Lamont scientists are working with lumber salvage companies to preserve old timbers from demolished structures that offer rich clues to climate data and human history.
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Melting Glaciers Reveal Clues to Climate Adaptation in Norway’s Mountains
Glacial archaeologists are uncovering hundreds of artifacts in Norway, including the best preserved pair of prehistoric skis found to date.
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Tree Rings, Climate Change and the Rainy Season
Seeking to understand the history of the southeast Asian monsoon, researchers venture into the remote highlands of Vietnam to sample the rings of behemoth cypress trees that have survived for a thousand years.
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Science for the Planet: Why We Need to Preserve Maritime Forests
Tree-ring scientist Nicole Davi explains the critical role maritime forests play in protecting our coastal communities from storms. The tree-ring records she’s building will help us understand how these ecosystems are responding to climate change.
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1,000-Plus Years of Tree Rings Confirm Historic Extremity of 2021 Western North America Heat Wave
Scientists quickly pronounced the summer 2021 heat wave that hit western North America to be unprecedented, but they had no long-term physical proof. Now they do.
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Scientists Say a Shipwreck Off Patagonia Is a Long-Lost 1850s Rhode Island Whaler
In 1858, a sailing ship left Warren, R.I., to hunt the globe for whales, and never returned. Where did it end up? Researchers from the southern and northern hemispheres joined to investigate.
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Científicos afirman que un naufragio en la costa de Patagonia es un ballenero norteamericano perdido en 1859
En 1858, un velero partió de una ciudad costera del noreste de Estados Unidos para cazar ballenas alrededor del mundo y nunca regresó. ¿Dónde terminó? Investigadores de los hemisferios sur y norte se unieron para dar respuesta a este misterio.
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New York City’s Hidden Old-Growth Forests
Scientists are uncovering centuries of climate data and human history from giant old timbers saved from demolished structures.
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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.
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
