Charlotte Pearson's eyes scanned a palm-sized chunk of ancient tree. They settled on a ring that looked "unusually light," and she made a note without giving it a second thought. Three years later, and armed with new methodology ...
Earth Sciences
Mar 30, 2020
5
1122
There is no longer a need to guess what ocean temperatures were like in the remote tropical Pacific hundreds of years ago. The ancient coral that lived there know all.
Earth Sciences
Mar 26, 2020
0
112
Without a doubt, Tyrannosaurus rex is the most famous dinosaur in the world. The 40-foot-long predator with bone crushing teeth inside a five-foot long head are the stuff of legend. Now, a look within the bones of two mid-sized, ...
Archaeology
Jan 1, 2020
0
969
In an unusual new study, scientists say they have detected the fingerprint of human-driven global warming on patterns of drought and moisture across the world as far back as 1900. Rising temperatures are well documented back ...
Earth Sciences
May 1, 2019
29
677
The growth of forest trees all over the world is becoming more water-limited as the climate warms, according to new research from an international team that includes University of Arizona scientists.
Environment
Jan 16, 2019
1
1100
A team of researchers with members affiliated with several institutions in the U.S. and China has found two stalagmites that offer a way to improve the accuracy of the carbon-14 dating technique. In their paper published ...
For the first time, scientists have traced the north-south shifts of the northern-most edge of the tropics back 800 years, reports a University of Arizona-led international team.
Earth Sciences
Oct 15, 2018
0
98
New analyses that use tree rings could settle the long-standing debate about when the volcano Thera erupted by resolving discrepancies between archeological and radiocarbon methods of dating the eruption, according to new ...
Earth Sciences
Aug 15, 2018
10
151
Records of Spanish shipwrecks combined with tree-ring records show the period 1645 to 1715 had the fewest Caribbean hurricanes since 1500, according to new University of Arizona-led research. The study is the first to use ...
Earth Sciences
Mar 7, 2016
3
509
Researchers studying the rings of ancient trees in mountainous central Mongolia think they may have gotten at the mystery of how small bands of nomadic Mongol horsemen united to conquer much of the world within a span of ...
Earth Sciences
Mar 10, 2014
3
0
