Discovery Channel HD Wednesday

The manufacture of fire extinguishers, doughnuts, shock absorbers and banjos, and how technology has led to changes in production methods

The manufacture of dress forms, boat propellers, duvets and taps, and how their production methods have evolved with changes in technology

Pete Nelson heads to the Bella Rose plantation in Virginia, where he builds a luxurious Thomas Jefferson-inspired treehouse complete with colonial columns

Pete Nelson constructs a thrill-seeker's dream treetop escape in Washington, complete with a bouncy-bridge entryway and a zip-line through the forest

Dustin's risky gamble of investing his life savings pays off after Carlos removes a monster boulder and finds chunky nuggets. Meanwhile, Fred and the crew battle the Trifecta

Dustin dives deeper than ever and uncovers the largest obstacle of his career. New recruit Scott finally gets the opportunity to prove himself in the water

Germany's Volkner Mobil RV can carry a compact car inside the axels. Oregon's Marathon Coach builds for an epic RV-trailer combo

Germany's Unicat builds their largest expedition vehicle, and a vintage Airstream motor home becomes a hot rod in Colorado

The mystery of who or what stole a cow's carcass that was being used for a science experiment. Plus, the natural event that caused a gathering of orcas in Norway

Why eggs are shaped the way they are and finding out whether fish can really predict when an earthquake is about to happen

The mystery of how and why 5,000 birds fell from the sky in Arkansas. Plus, the reason for a skunk doing a handstand and what makes a frog flash

The mystery of zombie spiders, and why a pod of beluga whales would adopt a unicorn of the sea

A look at how the sitar, a classic Indian instrument, is crafted, how beef biltong is made, and how large bulldozers are built

Investigating how the iconic fedora hat is fashioned, how cement is made, and how millions of peas are harvested and frozen in under three hours

The complex technological processes involved in turning goat fleeces into fabrics, building a quad bike that turns into a jet ski, and creating a harp

Exploring how South Africa's famous redbush tea is produced, how luggage is loaded onto the correct aeroplanes, and how a hairbrush fit for royalty is made

Marty embarks on a dangerous self-shot mission to carve a road up 300-ft cliffs. Meanwhile, Misty enlists her family to build a predator-proof coop for the chickens

Spring arrives and the family self-shoots preparation for the epic expansion of their homestead. Misty plots a huge greenhouse to feed three generations

Mike Brewer and Elvis Priestley hunt for Australia's favourite pick up, the Hilux. Despite years of farm use, the boys aim to create the ultimate off-roading beast

After risking it all for the Dakar Rally, Sara Price becomes stranded just 100km into the race, putting her entire campaign in jeopardy.

After years of searching, Mike's found the ultimate '80s hot hatch: the Renault 5 GT Turbo. Can Elvis restore it in time for its new owner's birthday?

Ellie hits the runway on her first ever test drive, Dean tries to convince a serial supercar swapper to buy an Audi R8, and star valeter Ollie becomes a dad

The team journeys to Okinawa, Japan to investigate reports of possessions by the spirits of people who died in the bloody battles of World War II

At Arlanda, a man tries to sneak 30 million in cash abroad. At the border in Skåne, a car full of alcohol gets pulled over

After risking it all for the Dakar Rally, Sara Price becomes stranded just 100km into the race, putting her entire campaign in jeopardy.

Ellie hits the runway on her first ever test drive, Dean tries to convince a serial supercar swapper to buy an Audi R8, and star valeter Ollie becomes a dad

Part one of two. It's a historic week on the Bering Sea! Kris launches his crawler deeper than any miner has before. Chris makes a huge gold nugget discovery

Tim heads to Oaxaca to uncover the secrets of making Mezcal. With costly corn mash about to expire, Jerry jury rigs auto parts to help accelerate the flow of liquor

Buying goods from home

Buying goods from home

The manufacture of bronze bells, wooden aeroplane propellers, charcoal briquettes and gas-log fireplaces

The manufacturing processes behind pocket knives, soapstone products, electric pole transformers and traditional snowshoes, and how technology has affected them