Infections after a prostate biopsy are rare, but they do occur. Now research shows that fewer than 2% of men develop confirmed infections after prostate biopsy, regardless of the technique used. In the United States, doctors usually thread a biopsy…

Animals renowned for their outstanding night vision include owls, cats, tarsiers (a tiny primate in Southeast Asia) — and even the dung beetle. But humans? Not so much. Over time, many people suffer from night blindness, also known as nyctalopia.…