The Einstein Challenge

Two aeronautical experts from NASA face-off to explain everything from how planes take off to how a stealth bomber makes itself invisible.

Two physicists explain thermodynamics and extreme altitude by tackling questions about parachutes and diving to the ocean's greatest depths.

Two historical weapons experts explain ancient warfare by demonstrating the use of weapons like the trebuchet, hwacha and Greek fire.

Experts in environment studies explain the great garbage patch, the sinking of the Titanic, and the causes of an avalanche, among other natural and man-made disasters.

Paleontologists face-off on the topic of dinosaurs, including the supersonic power of the Apatosaurus' tail, the fearsome jaws of Tyrannosaurus Rex and exactly how a giant asteroid meant the end for dinosaurs.

Expert professors specializing in World War II History explain topics that include the D-Day invasion and cracking the enigma code

Food experts explain the less glamorous aspects of the food: How to make gelatin, the secrets of competitive eating and why you should approach a pufferfish with extreme caution.

We don't have a summary for Pyramid Schemes yet. Hang in there, or go ahead and contribute one.

We don't have a summary for Dark Ages yet. Hang in there, or go ahead and contribute one.