Discovery Channel HD

'S15/E17'. How do they grow America's only freshwater pearls in Tennessee? Plus, what secrets are behind how the world's sharpest knives are made?

'S15/E18'. How do they turn root vegetables into sweet sugar? How do they make feather dusters? And, how do they make billions of balloons to keep parties popping?

'S15/E19'. How do they turn trees into pencils? How do they make liquorice? And, how do they use traditional techniques to weave the world's most fashionable lace?

'S1/E1 - Alaska's Lost River Kings'. Fisherman and adventurer, Jeremy Wade, travels to Alaska to discover what has happened to the king salmon - the power athletes of the salmon world.

'S1/E7 - Return Of The Outback Beast'. Jeremy heads to Australia to investigate an underwater attack. Could it be the work of a giant fresh water predator that many believed to be extinct?

'S2/E4 - Piney Woods Place'. A naturalist builder builds a remote sanctuary in northwest Texas. She builds the two-story house using a cob mixture and adds touches of comfort.

'S2/E5 - Streamside Cottage'. A treehouse builder constructs a cottage retreat in Washington. He creates a natural siding and a huge fishing net for lounging above the living space.

'S2/E14 - Steam, Bicycles and Metal Rolling'. In Cornwall, Henry and Sam find some very rare early-1900s steam-powered cars. If they're very lucky, the duo might even get to ride in one!

'S2/E15 - Signs and Wonders'. In Somerset, Henry and Sam visit a man with an amazing collection of motorbikes. He has some rare finds, but are they too expensive for the guys?

'S1/E8 - 1970 Scout's Dishonor'. Tony takes on a botched Scout nightmare with wiring issues. Another client's Camaro faces roof damage that needs immediate attention.

'S1/E9 - '80 Junkyard Cherokee'. A Cherokee Chief hopes to become a transport for some furry friends. Meanwhile, a Ford Torino finally gets repaired to the owner's liking.

'Gold Rush: Mine Rescue With Freddy & Juan. S1/E12'. Freddy and Juan return to the mighty Klondike to help a husband-and-wife team bring their struggling mine back from the brink of bankruptcy.

'Gold Rush: Mine Rescue With Freddy & Juan. S1/E13 - Freddy's Gamble'. Freddy and Juan are in the Yukon to help a prospector and family man increase his gold recovery. If they succeed, they'll help secure his family's future.

'S6/E2'. The Cheals take on their most dangerous dig ever. The Bushmen trial a rookie to operate their exploration drill, but it doesn't go as smoothly as they'd hoped.

'S3/E4 - Frozen With Fear'. Time is short in Saqqaq and Eric pushes the team to explore every corner. After Jesse and Gator refuse, only Americo follows Eric up a deadly 1200 ft slope.

'S1/E2 - Cold Water Mystery'. Fisherman and adventurer, Jeremy Wade, is with a commercial fishing boat in Alaska, searching for giant halibut. Will they catch the sought-after 50-lb halibut?

'S1/E6 - Toxic Invader'. Fisherman and adventurer, Jeremy Wade, travels to western Australia to discover what is wiping out many of the fish in Australia's Fitzroy River. What will he find?

'S3/E3 - All Torqued Up'. Dayne Hearn tells Team 256 about Malcolm Storey's new grudge racing team. Also, Malcolm tries to recruit Brant Arnold for his team to face Eric Malone.

'S1/E2 - Hot Hatch'. A passion project by a few mechanics ended up creating a new kind of car, the hot hatch. A panel of motoring experts discuss the five best hot hatches of all time.

'S3/E5 - Curse Of The Swamp'. A former survivalist returns for his chance at redemption in the infamous haunted swamps of Louisiana and is joined by determined Air Force veteran.

'S3/E6 - Curse Of The Swamp: Part 2'. Jeremy and Melanie continue the hardest challenge of their lives. They endure constant threats from predators, while desperately trying to secure food.