Discovery Channel HD

Drew's son Tom is keen to learn more about the trade. They visit Shepton Mallet Flea market in Somerset, where Tom spots a stunning painting.

It's been tipping over for 800 years - what's the gravity-defying magic behind Pisa's leaning tower? And, how are chocolate digestive biscuits manufactured?

How did the ancient Greeks invent parchment with techniques still used today? And how do they make shuttlecocks, the fasting moving object in sport?

How do they make smooth writing ballpoint pens that don't leak or fade? And, how do they make pizza for soldiers on the frontline?

The guys are in Borneo, looking for a fish close to extinction - the mahseer. To find it, they risk entering the territory of the headhunting Dayak people.

The team follows a lead to a remote river in Greenland, believed to hold huge Arctic char. And, they investigate a myth of Atlantic Salmon occupying a lone river.

A young couple sets out to create their dream treehouse retreat in Northern Georgia overlooking the breath-taking Blue Ridge Mountains.

Any building project is stressful, especially if the build is in the middle of nowhere. A family builds on their 46-acre land by the Smoky Mountains.

Henry and Sam visit a fanatical biker in Yorkshire, who has the biggest collection of motorcycles they've seen so far. What bike will they come away with?

In the New Forest, Hampshire, Henry and Sam visit a collector of Americana. What rare bicycles and classic sportsters will they find in his sheds?

Robert Downey Jr. flexes his negotiating skills to buy a used car he's always wanted. Of course, the first thing he does is tear it apart and rebuild it!

To revive a stalled 1966 Lincoln project, Tony Jr. puts a modern LS into the classic. Plus, the guys give a 2008 Smart Car form and function.

Peter has sunk everything he has into building a mine, but he's still not finding gold. Freddy and Juan discover a simple fix that could change Peter's fortunes.

In Oregon, a 23-year-old man and his family desperately need help with their gold mine. Freddy and Juan have a plan to completely transform this mining operation.

The Bishop loses his partner Scotty deep underground. The Tarantos' hopes of exposing a rare pocket of opal are in jeopardy and Young Guns make a big mistake.

A Marine needs a kit to disarm explosive mines, but one wrong choice for Mad Dog could trigger an explosion. Plus, a rescue diver needs a knife that works underwater.

The Barramundi is nearly impossible to find in the wild. The crew travels to Australia, where Aboriginal guides take them to a Barra fisherman's paradise.

In Mexico, the crew navigate a maze of crocodile and mosquito-infested waterways and lagoons in search of a rumoured paradise for fishing tarpon.

Parker runs a third wash plant for the first time. Tony surprises Kevin with a new toy. Cousin Mike makes a big misstep when a plant of his goes down.

With just days left to move logs before fire season shuts them down, it's all hands on deck to save a sinking float camp and cash out at both camps.

A California Buddhist and an Oregon fisherman take on the dangers of the bush in Queensland, Australia. How will they fare against the local saltwater crocodiles?

Amateur outdoor adventurer Kaila joins forces with survivalist expert Trevor to try to survive in the isolated and inhospitable jungle in Ecuador's 'Cloud Forest'.