In the 1930s, as the world hurtled toward war, speed was all the rage. Bobsledding, the fastest and most thrilling way to travel on land had become a sensation. Exciting, and brutally dangerous, it was the must-see event of the 1932 Winter Olympics at Lake Placid. The American team was Jay O'Brien, the high-society playboy; Tippy Grey, a scandal-prone Hollywood has-been; Eddie Eagan, world champion heavyweight boxer and Rhodes Scholar; and Billy Fiske,...

Join archaeologists and divers recovering remains of ships and planes lost during World War II's epic Dunkirk operation. Discover new evidence of the ingenious technology that helped save Allied forces from defeat by the encircling Germans.

Cat tales: They may have stolen many hearts, and the internet, but cats can be perplexing pets. As much cuddly and playful as they are aloof and uncaring, they've often raised the question: Did humans ever really domesticate felines? And what more can science tell us about a relationship that predates history? Dog tales: Dogs have been our companions for thousands of years. But why? Do they really love us, or are they just in it for the food? Scientists...

In a laboratory, a team of engineers create a replica of Beijing's Forbidden City to uncover the secrets underlying its ability to withstand earthquakes over the centuries.

Eagles dominate the skies. But what makes these predators so special? Researchers put one eagle to the test, and stunning up-close footage reveals her incredible strength, eyesight, and flying skills.