An outpouring of magma isn’t the biggest risk to people downhill from Mount Rainier in Washington. The active volcano’s greatest danger comes from lahars — amalgams of mud, rock and water that are as dense as wet concrete.

Arizona has recorded about 11 inches of rain statewide — less in Phoenix, more in the High Country — every year since the 1990s, an inch below the long-term average and enough to declare a drought. As the state enters the 32nd year of drought, the end should be near.

Researchers at the University of Arizona say there may be at least twice as many vertebrate species as previously recognized.

From carbon-scrubbing crops to advanced life-support technology and an indoor Mars yard, the SAM facility is emerging as a proving site for future off-world missions.

The Wildcat Philanthropic Seed Fund has made its first investments in these venture-ready companies with more on the way, including one with College of Science faculty member Thomas Gianetti.

Two scientists combine complementary strengths in RNA biology and aging neuron research to advance new approaches in studying ALS, supported by the University of Arizona BIO5 Institut.

A new study reveals that astrocytes, the supposed "support cells" that are spread all over the brain, are as important as neurons in fear memory.

The University of Arizona celebrated a new student success milestone when the Arizona Board of Regents approved plans for a future residence hall.

Just a couple years after finishing her collegiate career at the University of Arizona, Sieben is preparing to compete for Team Canada in two-woman bobsled at the 2026 Winter Olympics in Milan, despite this being only her second season in the sport.

Dr. Laura Condon, a University of Arizona hydrology professor, says AI is becoming a powerful tool in Earth science but it shouldn’t replace human thinking. In her Feb. 25, 2026 lecture, she will explain how machine learning helps scientists work with massive hydrology datasets and improve forecasting, while also warning that the real goal of science is building understanding, not just better predictions.