November 6, 2018 Edition Scientists stored stem cells that produce sperm for months and used them to restore fertility in male mice. The approach could potentially help young boys undergoing chemotherapy. | A sensitive test accurately screened blood samples for the presence of any of the more than 300 bacteria known to cause disease in people. | Researchers discovered a set of brain cells that keeps track of time in mice. The study suggests that there are separate brain circuits for recording information about time and places. | Popular Stories Connect with Us |