Secrets of the Universe

In the shadows of the Smoky Mountains lives a football dynasty. Alcoa High School is southern Appalachia's true football powerhouse.

How, from bizarre ancient markings to random numbers and letters, codes and ciphers have been used for millennia to send secret messages, hide identities.

With personal interviews, Legends of Speed not only describes dramatic happenings on the race tracks, but also puts a spotlight on the fears, and the courage of the drivers and their relatives. All of them deal differently with the extreme sport of "Formula One" racing, but they all have one thing in common and that is the will to win.

New fossil discoveries are revolutionizing the way we view these ancient reptiles. Marvel at these scientifically accurate, beautifully-rendered CG dinosaurs as we examine what years of hard science has shown us about how they once lived.

Yellowstone National Park is famous for its unparalleled beauty but there's much, much more happening in this breathtaking spot.