The theme of the 1939 Worldís Fair was the "World of Tomorrow." Fittingly, it was there that NBC announced the advent of scheduled, broadcast television. TV ultimately transformed entertainment and revolutionized the way we see the world. But in the beginning, people were slow to accept it. Modern Marvels; chronicles the incredible story of television, from the vision of Philo Farnsworth, a Utah farm boy who developed the first working system in 1925, to the technological breakthroughs that are transforming the medium as we head into the 21st century. Interviews with media moguls and TV personalities, including legendary anchorman Walter Cronkite, provide an insiderís look at the huge industry TV has become. And broadcast pioneers recall the patent battles, competing systems, and relentless geniuses that defined the early years of television.