Discovery Channel HD

'S18/E15 - Nature In Design'. Drew and Alister hunt for pieces inspired by nature, from a folk-art bird's head walking stick in Brighton to a fireside tiger in Shropshire.

'S11/E12 - Aquavit And More'. How do they make Aquavit? How do kangaroos help protect motorcycle riders in a crash? How do they clean away years of grime from New York's St Patrick's Cathedral?

'S11/E13 - Dock Cranes'. How do they build a port ready to receive container ships? How do they make 28 million plastic bags a day? And, how do they blow the glass to make baubles?

'S11/E14 - Balsamic Vinegar'. How do they create the world's most expensive vinegar? How do they keep divers dry and warm in the ocean? How do they build a plane that can fly upside down?

'S4/E7 - Hard Rock Risk'. Tyler leads Parker to a promising hard rock mine. They detonate high explosives to gauge if the rewards of underground mining justify the risks.

'S4/E8 - Future Ground'. Parker travels deep into Australia's 'Super Pit' gold mine. He stakes a new claim and makes a big decision that could change his mining career.

'S4/E5 - Plan B'. Creig's build struggles with the emotional scars of the bear mauling. Plus, Tom's surprise from the sky shifts the build into a new gear.

'S4/E6 - Independence Day'. Rich and his team race to stay ahead of the helicopter drops. And, an eight-point earthquake leaves Creig's build on shaky ground.

'S19/E20 - Battleship'. Hampered by damage, Sig must outmanoeuvre an unknown captain to hold onto his ground. Jake allies with Wild Bill to make a critical deadline.

'S19/E21 - Last Stand Of John Hillstrand'. Johnathan's crab pots are in peril. Sig seeks a Bairdi hotspot with a decades-old computer. Jake's short on crew and must put his niece on hydraulics.

'S1/E20 - Crushed GTO And Chopped '41 Ford Part 2'. The guys teach Thomas a lesson and crush the '71 GTO with a tank. Thomas buys a food truck, plus a '41 Ford to turn into a flaming hot rod!

'S1/E21 - '57 Corvette Part 1'. Thomas and Tom get a bargain '57 Corvette and help Sue buy a '56 Ford truck for the garage to rebuild. Tom's food truck arrives and a new team member joins.

'S2/E13 - Nails/Staples/Safety Glasses/Fabrics/Bicycles'. More everyday items are put under the microscope as we discover how they are made.

'S3/E27'. How do they make cereals, safety boots and electronic signs? Find out as more everyday items are put under the microscope.

'S2/E12 - Into The Alien Ocean'. Jess and Phil's investigation into unidentified objects off Catalina Island's coast heats up after the discovery of an extra-terrestrial underwater base.

'S5/E1'. Parker begins booting up his new gold mining operation in Alaska. When he can't find a wash plant, he travels to New Zealand for new kit - and big gold.

'S5/E2 - The Secret Sluice'. Parker and team track down a legendary miner on the gold-rich west coast of New Zealand. Parker is blown away by what he finds in the sluice.

'S1/E5 - Bolivia: The Atacama Desert'. Ed is in the world's highest, driest desert in Bolivia's isolated high plains. He must navigate his way to safety through perilous canyons in the blazing heat.

'S1/E6 - Panama: The Darien Gap'. Dropped on Panama's Pacific Coast, Ed faces a gruelling 10-day hike through the Darien Gap. Can he tackle one of the world's most perilous expanses of jungle?

'S3/E8'. Cheeny has a key advantage in a friction fire elimination challenge, but her strategy puts her at risk. Blisters on Matt's hand might send him home.

'S11/E12 - Aquavit And More'. How do they make Aquavit? How do kangaroos help protect motorcycle riders in a crash? How do they clean away years of grime from New York's St Patrick's Cathedral?