Discovery Channel Tuesday

How do they grow America's only freshwater pearls in Tennessee? Plus, a look at how the world's sharpest knives are forged

How ugly root vegetables are transformed into sweet sugar. Plus, the manufacture of feather dusters and party balloons

The Goblin Works Garage gang opens a bigger workshop to cope with demand, going bolder than ever before with design and restoration work

The team takes on its first ever EV build as its members attempt to mount a Tesla battery-powered electric powerplant inside a classic - the Cinquecento or Fiat 500

As Juan's wife has a baby, Freddy must work alone to save a father-and-son mine. Freddy's fixes will determine if this family can mine together for another season

Expert gold miner Freddy Dodge helps struggling mine owners. If he can increase the owner's gold haul, he gets a cut of the profits but nothing if he fails.

Heavy D powers up with his next SEMA build - a 6x6 with a custom full-track assembly. Later, Diesel Dave adds the finishing touches to his dream El Camino

Heavy converts a Vietnam-era bridge boat into the world's only diesel-powered surf boat. Later, the guys head to California to track down a rare Excursion

Sig devises a way to speed up his crew. Wild Bill promotes Landon to the wheelhouse while he goes under the knife. Keith helps Jack but is suspicious

Mother Nature blows back as Landon embarks on his first solo mission. Sig fishes in 20-foot seas as ferocious tides endanger John's crewmen

The processes involved in making putty knives, garage doors, electric motors and wool, and how advances in technology have changed these methods

How toothpicks, acrylic baths, helicopters and beer are produced, and the ways in which their manufacturing processes have evolved over time

The manufacture of nails, staples, safety glasses and bicycles, and how the processes behind them have developed over the years

An insight into the processes involved in manufacturing kayaks, safety boots, breakfast cereal and electronic signs, with comment by those involved

The team must turn BBQ smokers into big money at a Texas-sized mess in Houston. At a second job, a massive termite infestation could eat the profits.

Matt hunts for rare liquor, hand-rolled cigars and vintage drums in two California hoards. A baseball pennant misprint could be a huge score

Mike Brewer seeks a challenge in the form of a 1970 Ford Bronco, which is riddled with rust. The project seems to be seconds from disaster, but Edd China keeps his cool

Mike Brewer and Edd China are asked to restore a powerful, luxury 1983 Mercedes 500 SEC, but face a steady challenge in returning it to its former glory

Rick Ness goes on a midnight run to stake new ground for his empire. While fixing Monster Red, he discovers she's hiding a surprising amount of gold

In the definitive guide, miners reveal exactly where to find gold all over the world, from creeks to glaciers and even on beaches

Josh Gates searches Cote d'Ivoire, West Africa, for a missing American military plane from World War II, and its crew of 18 members

Jake's next move puts him at odds with Sig. Wild Bill battles heavy seas and side effects, while Sophia attempts to pop in a deckhand's dislocated hip

Rick Ness goes on a midnight run to stake new ground for his empire. While fixing Monster Red, he discovers she's hiding a surprising amount of gold

In the definitive guide, miners reveal exactly where to find gold all over the world, from creeks to glaciers and even on beaches

Kris must move fast in the face of a life-threatening incident. Vernon pushes a diver for a personal record, and Shawn deals with a crack in the ice

Tickle and Carol open their new restaurant while contending with conflicting priorities. Mark and Digger enlist Amanda to improve their popular hazelnut rum

Buying goods from home

Buying goods from home