The average life span of a single red blood cell is 120 days. | Close to 80% of people who watch the Super Bowl on television, only do so to view the commercials. | Amazingly, goalies in the National Hockey League played without masks until the year 1959. | The KGB is headquartered at No. 2 Felix Dzerzhinsky Square, Moscow. | A male firefly's light is twice as bright as a female's.