A massive telescope buried in the Antarctic ice has detected 28 extremely high-energy neutrinos -- elementary particles that likely originate outside our solar system. Two of these neutrinos had energies many thousands of times higher than the highest-energy neutrino that any man-made particle accelerator has ever produced, according to a team of IceCube Neutrino Observatory researchers that includes Penn State scientists. These new record-breaking neutrinos had energies greater than 1,000,000,000,000,000 volts or, as the scientists say, 1 peta-electron volt (PeV).

A gene associated with both protection against bacterial infection and excessive blood clotting could offer new insights into treatment strategies for deep-vein thrombosis -- the formation of a harmful clot in a deep vein. The gene produces an enzyme that, if inhibited via a specific drug therapy, could offer hope to patients prone to deep-vein clots, such as those that sometimes form in the legs during lengthy airplane flights or during recuperation after major surgery. The research, which was led by Yanming Wang, a Penn State associate professor of biochemistry and molecular biology, and Denisa Wagner, senior author with decades of research on thrombosis at the Boston Children's Hospital and the Harvard University Medical School, will be published in the Online Early Edition of the journal Proceedings of the National Academy of Sciences during the week ending May 10.