University of Arizona engineers lead a research team that is developing a new kind of pacemaker, which envelops the heart and uses precise targeting capabilities to bypass pain receptors and reduce patient discomfort.

UArizona ranked 108th in the 2023 Best Global Universities ranking. The university was No. 44 among universities in the U.S. and No. 23 among public universities.

UArizona researchers are furthering their efforts to examine how water, aridity and heat impact communities in the American Southwest, and how those challenges affect human health.

Triple-negative breast cancer accounts for about 10 to 15% of all breast cancers. Researchers have developed a drug they hope can treat it with little to no toxic side effects.

Dani DellaGiustina, deputy principal investigator for the OSIRIS-REx mission and principal investigator for OSIRIS-APEX, was named to the list for her work to understand the solar system's past, present and future.

Why do some animals have bright colors to impress mates while others use them to ward off predators? It depends on their ancestors, new research reveals. Species that use bright colors as a sexual signal had ancestors that were active during the day, whereas species that use them as warning signals had ancestors that were active at night.

Maps of Earth's temperature and rainfall 56 million years ago could provide insight into the planet's future as carbon dioxide levels in the atmosphere increase.

Early in its history, the red planet likely would have been habitable to methanogens – microbes that make a living in extreme habitats on Earth. But climate change driven by Martian life might have contributed to making the planet's surface uninhabitable early on.

Shock-darkened meteorites are characterized by dark veins. Planetary scientists have been unable to pinpoint a nearby asteroid source of these meteorites – until now.

Orbital space around Earth has become congested and competitive. The Space4 Center is developing solutions to ensure that the use of orbital space remains sustainable and safe.