The broiling summer of 2023 was the hottest in the Northern Hemisphere in more than 2,000 years, a new study found. When the temperatures spiked last year, numerous weather agencies said it was the ...

The UA has plenty of special features to offer, but one of its more overlooked aspects is its abundant plant life—specifically, that of the Laboratory of Tree-ring Research. UA’s tree-ring lab right ...

Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...

Discovering evidence of deadly deluges of snow from the past could help protect people on mountains around the world, researchers say. By Katherine Kornei A rumble, a deluge of snow and then silence — ...

A new study leveraging 20,000 tree-ring records and nearly 150 scientists' contributions from across the globe shows that, while droughts appear to have had a modest impact on tropical tree growth in ...