Discovery Channel HD Wednesday

How the manufacture of technical glass, washing machines, playing cards and crossbows has changed over time

The origins of cine cameras, glass Christmas ornaments and giant tyres, and how their manufacture has changed with technology

Pete Nelson and the team build a charming treehouse in the style of a rustic river shack along the banks of the Mississippi

Pete Nelson builds an outside-in treehouse in Alaska, heating things up by installing a sauna in the trees

Determined to add to his season's record-breaking gold haul, Dustin pushes his luck and a freak accident sends him hurtling out of control towards an 80-foot drop

Dustin takes the biggest gamble of his life, which could result in double the reward, or double the danger. Meanwhile, Fred drops a bombshell on Dustin

Alex builds a foldable chair for a beloved basketball coach. Robin is tasked with creating a three-piece mirror, and Charis makes an ottoman style seat.

Ella and Charis team up to build a remarkable sculptured sign language table. Alex creates a vintage style bookcase, while Saf works on a pair of stools.

What happens when a zebra has no stripes and why goats would risk their lives to climb an almost vertical wall

Why a pair of giraffes have turned white in Kenya and why the world's fastest land animal is not always successful when hunting

How bats avoid bumping into each other in the middle of the night and why a bottlenose dolphin sought a diver's help

Answers to more wildlife mysteries, including why 25,000 honeybees swarm a hot dog stand in the middle of Times Square and the reason for a bat hunkering down in the snow

How giant floating power stations and the world's smallest aircraft are created

How coloured crayons used by children and artists are created and how artisans and craftsmen make treasured mirrors in India

The complex technological processes involved in creating next-generation race-cars that run on electricity. Plus, the creation of mead, favourite drink of the Vikings

The construction and maintenance of the Mississippi River's famous steam-powered paddleboats, and the creation of the powerful 'waterfall' defence system

As the summer fades, the last Alaskans begin their countdown to trapping season. Heimo works to ready a campsite, while Tyler and Ashley hope to stock up on moose meat

The countdown to winter continues as Heimo breaks ground on the new cabin. Bob and his daughter embark on a river journey to a place from their past

Mike and Elvis take a huge risk buying a neglected Audi RS2 that they can't test drive. Will this high-performance estate car turn into a €40k money pit?

After an emotional send off, Sara battles through a week of chaos, determined to achieve her goal of becoming the first American woman to win Dakar.

The boys snap up a Mitsubishi Shogun. If Elvis can sort out the car's rust, he will upgrade its off-roading capability with a lift and some accessories

Dean looks to grow his collection of superbikes. He invites TT-winning superbiker rider Dean Harrison to the airport for a unique speed challenge on the runway

The team continue their investigation into a lunatic asylum. They capture evidence that convinces them this is their most terrifying expedition yet

At Arlanda, Alex stops a man he suspects of drug smuggling. He soon realises the man is not telling the truth. Plus, Olivia gets yelled at

After an emotional send off, Sara battles through a week of chaos, determined to achieve her goal of becoming the first American woman to win Dakar.

Dean looks to grow his collection of superbikes. He invites TT-winning superbiker rider Dean Harrison to the airport for a unique speed challenge on the runway

Part two of two. The weather is turning, so it's 'make or break' time for many miners in the fleet. Vern finds a lucky nugget, while Shawn battles freezing ground

Mark and Digger discover they're under investigation by the law. And, Josh goes into hiding when a fire marshal tracks the source of his house fire

Buying goods from home

Buying goods from home

The manufacture of microphones, hot tubs, artificial turf and beer steins, and how their production has changed with evolving technology

The production processes involved in the making of hot rods, decorative eggs, fire hose nozzles and baseballs, and how technological advances have changed their manufacture