El Niño is not a new weather phenomenon, according to a recent NASA study that looks 750 years into the past using tree-ring records. Utilizing special computer techniques, a NASA scientist has linked ...

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 ...

A new UA study uses tree-ring data to reconstruct Colorado River flows over the past 500 years. The study could have a significant impact on water use in the West and further emphasizes the need for ...

TUCSON, Ariz. (KGUN) — What do trees and fish have in common? It’s an important question the University of Arizona is answering. The school’s Laboratory of Tree-Ring Research (LTRR) is the world’s ...

TUCSON, Ariz. (KVOA) - A new study from the University of Arizona reveals how historical tree-ring data can help predict extreme summer weather events. Researchers, led by Ellie Broadman, analyzed ...

TUCSON — When Bryan Black accepted a post-doctoral research position at Oregon State University to study how fish grow, he hoped to apply his background in forest ecology to marine life. Black, a ...

As long-living lifeforms, trees can provide scientists with a way to look back into the past, revealing everything from a reversal in Earth's magnetic field 42,000 years ago to a time in 774 CE when ...

Most people are familiar with the notion that "tree rings" — the concentric bands visible on a cross-section of a tree's trunk — serve as an indicator of a tree's age. Researchers at the University of ...

Stem growth of tropical trees is reduced in years when the dry season is warmer and drier than normal. This is the main finding of a global tree-ring study published in Nature Geoscience led by ...