Scientists have known for years that when vampire bats tear through an animal’s skin with their razor-sharp teeth, their noses guide them to the best spots – where a precise bite will strike a vein and spill forth nourishing blood. But nobody knew exactly how bats knew where to bite – until now.

A new and simple risk score may aid physicians in gauging the likelihood that a common drug will cause a hemorrhagic stroke or other major bleeding in patients with atrial fibrillation, potentially allowing wider but safer use of the effective drug.

UCSF is offering a new mobile app to keep news and information about the University handy for people on the go.