Biathlon is one of the world’s most popular winter sports. Millions of people around the world tune into the races on television each winter weekend. No one in the United States does, however.Why is that? The answer is because not many Americans know or care about biathlon, so it is not televised in the U.S. Without fans tuning in each weekend, potential sponsors and advertisers just are not there to make the television economics work.Most Americans probably do not know what biathlon is. Some may be vaguely familiar, …