Tree cores pulled from some of the planet’s oldest trees have helped extend records of past weather.

In summer 2021, a stunning heat wave swept western North America, from British Columbia to Washington, Oregon and beyond into other inland areas where the climate is generally mild. Temperature ...

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During her summer travels to her native Belgium, University of Arizona professor Valerie Trouet noticed something that turned casual curiosity into a major scientific discovery: when the sun hid ...

Like careful note-takers during the past 1,250 years, Engelmann spruce trees high in the Yellowstone National Park backcountry have left behind a record of how harsh summer temperatures have been. A ...

The Bannister Building looks distinct among the typical red-brick buildings on campus, yet students walking by, preoccupied by their phones and classes, fail to notice the 40-foot-long steel columns ...

Members of the research team collected tree ring samples at various locations in Europe, including the Balkan region. This visual may only be used in the context of reporting on the research ...

Thanks to a generous donation announced Friday, the Laboratory of Tree-Ring Research will now have a place to house its samples. Last month, Agnese N. Haury, the widow of one of the lab’s founders, ...

Forests around the world have the capacity to pull carbon out of the atmosphere to battle global climate change. But how much carbon they actually absorb is a question that still needs answering, and ...