Discovery Family HD

More everyday items are put under the microscope as we discover how sails, walnuts, wheel immobilisers and honeycomb structural panels are made.

After a night of low bets in Arizona, JJ decides to challenge a group of racers in New Mexico. However, the New Mexico roads are dusty and unpredictable.

The Memphis family continue their tour with a stop in Vegas. JJ is confident they can win big, but the lack of maintenance is causing car trouble.

Glenn hits a breaking point that sends him to hospital and threatens to shut down his mission of building a million-dollar business before it has started.

Glenn decides to take a risk and bet all the money he's earned so far on his most ambitious scheme yet, however there's a big issue with the new venture.

Adam wants to build his own version of King Arthur's legendary sword - Excalibur. Using the iron found in a meteorite, he attempts to make an indestructible weapon.

Adam and a demolition expert stage a series of daring experiments on one of the world's most dangerous and explosive substances: Nitroglycerin.

Some engineers believe the way for New Orleans to escape the water is to build a floating city. Long a dream for engineers, science has finally caught up with the idea.