An observer in North Dakota submitted the 10 millionth record to the UA network's database, which is a massive bank of data on plant and animal life cycles important for investigating environmental and climate change.
Evaluating extreme weather conditions and economic conditions from 1996 to 2016, UA researchers Laura A. Bakkensen and Riana Johnson found that Tucson has the greatest frequency of such events when compared with other large metropolitan areas.
Developing new ways to use radiocarbon dating in tree rings, UA dendrochronologist Charlotte Pearson builds on the legacies of scientists before her, including famed UA researcher Andrew Douglass.
