Blue phosphorescent OLEDs can now last as long as the green phosphorescent OLEDs already in devices, University of Michigan researchers have demonstrated, paving the way for further improving the energy efficiency of OLED screens. “This moves the blues into the domain of green lifetimes,” said Stephen Forrest, the Peter A. Franken Distinguished University Professor of Electrical Engineering and corresponding author of the study in Nature Photonics. “I can’t say the problem is completely solved — of course it’s not solved until it enters your display — but I think we’ve shown the path to a real solution that has been…

Skating monster by Hieronymus Bosch, Wikimedia Commons  This first ran January 3, 2019. I don’t know if Emily ever bought disability insurance or not. — Ed. “This is a nightmare,” I said to my boyfriend as we walked up to a skating rink in El Dorado Hills, California. The “Family Friendly Winter Wonderland” was in a shopping mall surrounded by faux-Tuscan mansions, and the rink was packed from barrier to barrier. Pete promised peppermint bark and beer if I stuck with our plan, though, so we went ahead and rented skates. A miniature choo-choo train chugged around the perimeter of…

As sea levels climb and weather grows more extreme, coastal regions everywhere are facing a creeping threat: salt. Salinization of freshwater and soils adversely affects 500 million people around the world, especially in low-lying river deltas. A new study led by researchers at the University of Portsmouth, in partnership with Dhaka University and Curtin University, sheds light on how rising oceans are pushing saltwater into freshwater rivers and underground water sources in the world’s largest river mouth — the Bengal Delta in Bangladesh. Drawing on nearly two decades of data from over 50 monitoring stations in coastal Bangladesh, the team…