A new study reports that men with wider faces are more aggressive, as face width is a marker of testosterone levels (i.e., the wider the face, the higher the level of testosterone). The study, conducted at Brock University in St. Catharines, Canada, was based in part on research from hockey players. According to MSNBC, "Canadian scientists investigated photos of pro and varsity hockey players, measuring how wide and long their faces were. They found the wider that faces looked, the more aggressive players were, as measured by the number of penalty minutes they accrued, which are handed out for aggressive behavior." Should we be worried about Hilary Duff and her wide-face, hockey playing beau Mike Comrie? Hmm…probably not. [MSNBC]