Both cross-country skiing and biathlon have welcomed their shares of stars over the past few years, but few, if any, have exploded onto the scene as quickly as Tarjei Bø. Last season, the 22-year-old Norwegian won an Olympic gold medal as part of the Norwegian relay team, but his best finish on the World Cup circuit was fourth. This year, though, he has come on like a freight train. After collecting his first World Cup...













