Researchers have discovered four previously unknown viruses that infect the Earth’s most abundant organism, the marine bacterium SAR11, which play a critical role in the global cycle of carbon and other nutrients.
After a nearly 5,000-year vigil upon a Nevada mountaintop, an ancient tree now finds its home in the UA Laboratory of Tree-Ring Research. The Bristlecone pine, called Prometheus, is the oldest individual ever known to have lived.
As the Curiosity rover touched down on the Red Planet on August 5th, teams at the University of Arizona gathered in the Lunar and Planetary Laboratory to cheer along with those at Mission Control in Pasadena. Once again, the UA is playing multiple roles in key aspects of the $2.5 billion mission.