Over three days in October, 75 sixth graders from Hendrick Elementary visited the Laboratory of Tree-Ring Research and took a deep dive into the world of dendrochronology, building on their classroom learning about tree rings, climate, and water use.

Analyzing tree-ring samples for spikes of naturally occurring radioactive carbon isotopes, a team led by U of A scientists has pinpointed the date of a massive solar particle eruption event that has long eluded researchers.

Climate change is altering the story that trees are telling. Scientists are having to adjust, coming up with new approaches to interpret the changing signal. And yet, as the scientists are shifting their techniques, it may be possible for them to design methods that get even more precise about the past — and in turn will help us better adapt to the future.

With funding from the Department of Energy, U of A researchers are working to revolutionize our understanding of how soil microbes influence climate change.

The Mentorship and Education in Science for Tucson program sends U of A juniors and seniors to local middle and high schools to provide one-on-one math tutoring to students.

Funding will support the development of K-12 programs that educate teachers and students about responsible mining and inspire students to pursue the mining industry.

An esteemed honor for mathematicians, Fellows of the AMS are recognized for “outstanding contributions to the creation, exposition, advancement, communication, and utilization of mathematics.”

U of A researchers have created the first astronomical equivalent of a fingerprint database for satellites, a critical first step toward easily identifying human-made objects in the increasingly crowded geostationary orbit.

Science alumni and their family and friends spent the pleasantly cool morning outside of Flandrau socializing and reminiscing with former classmates about their days at the University of Arizona.

Animals use vibrant colors to attract mates or warn predators. A recent study finds that there has been a dramatic explosion of color signals in the last 100 million years.