Discovery HD

How do they forge super steel to make a car lighter, greener and safer? And, how do they shear Australia's eighty million sheep every Spring.

How do they keep you comfortable, entertained and safe with the latest aircraft seats? And, how do they design bras with aerospace technology to give you that extra lift.

How is plasterboard made from power station smoke? How do they cast the world's top awards? How do they build a plane that can take off and land almost anywhere.

How do they make car windows to keep out wind and rain, stones and thieves, and even noise and harmful UV rays? And, how do they put the gloss on lipstick.

How do they make George Washington's favourite tipple? How do they crash test aircraft seats without crashing a plane? How do they produce billions of batteries a year.

How do they mine nickel to turn into nickels? How do they build the lock gates for canals to allow barges to climb hills? How do they put the bubbles in bubble tea.

The vets treat Xena, a German shepherd with head injuries after being trampled by a donkey. And, Coco the kitten is having trouble walking.

Nalla the dog needs emergency treatment after being shot in a home invasion. Plus, Dr Jeff and Hector treat wolves at a Colorado wildlife sanctuary.

At the International Training Centre, Dr Jeff treats a stray dog suffering from a broken leg. Meanwhile, Hector babysits Dr Jeff's dog, Fred.

As winter approaches Heimo and his daughter Krinn hunt for caribou. Ashley and Tyler reunite and continue building the new cabin before the cold weather sets in.

The Alaskans prepare for trapping season. Heimo's newest cabin may have fallen victim to a marauding bear. Meanwhile, Tyler and Ashley step up their house build.

With winter fast approaching, it's time to hunt moose. Tyler stalks an elusive bull and Charlie discovers why the area is called 'Starvation Country.

The Alaskans are desperate to fill their smokehouses before winter. The Seldens help haul home Tyler's moose kill. Heimo and Charlie worry about a lack of meat.

Winter in the Arctic Refuge usually means time for action. But this year, low snowfall slows them down - snow machines and dogsleds are useless in these conditions.

As winter tightens its grip, the days shorten - with less daylight for checking traps. Heimo and Edna's fur count is down, and wolves invade their traplines.

As Arctic ice wreaks havoc on the fishing grounds, Rick risks losing a fortune in crab pots. Johnathan tests the Time Bandit's reinforced bow.

Ant visits an Alfa specialist and gets more than he bargained for. Its win-win, but it'll be tricky to fit a Spider's axle, gearbox and engine into his 158.

Ant is beginning to feel the pressure of his ambitious build. The only place he can get the correct body mould on short notice is more than 5,000 miles away.

Chase Morrill and his crew renovate a family's cabin near the Appalachian Trail. But, the remote location, timeline and budget create challenges.

Teams build four-pronged, fire-hardened spears. One team's spear - and partnership - breaks under pressure. Cold, driving rain collapses a shelter.

Josh investigates Nikola Tesla's 'Death Ray,' a cryptic, demonic message from a possessed nun, and the real source of the Oracle of Delphi's visions.

While drilling above the Golden Staircase, outsiders close in. A blast reveals a hidden tunnel, and the team enters, rappelling down to investigate.

Birth Of The Monster Black Holes. Experts explain the importance of supermassive black holes. They have some answers, but can they solve the mysteries surrounding these phenomena.

Some of the brightest minds and theorists on the planet explore the limits of human knowledge and explain the science behind our star.

Senior recruits JQ and Jason Pohl to build a tribute bike for the Sikorsky Aircraft Corp. But fabrication issues have the guys spinning out of control.

The Teutuls build a luxury performance bike for Mercedes Benz-AMG. Sr taps a local artist to immortalize his kids in ink, then gets away with his best friend Gus.

Edd surprises Mike back in England by purchasing a 1916 Cadillac. The guys work hard to get the car ready for a 9000-mile endurance rally known as Peking to Paris.

Mike and Edd look over a few cars in the garage as they reminisce about the recent projects, with insight into how they went while looking at never seen before footage.

Mike gets his hands on a valuable 1995 Ford Escort RS Cosworth. Can new mechanic Ant Anstead bring back the 227 hp engine's famous 'fizz'.

Mike hopes to capitalise on '80s nostalgia by restoring an original 1982 Toyota Supra. Can Ant bring this car into the modern era without losing its originality.

Car dealer Mike Brewer snatches up a 1973 Ford Mustang Mach 1. Can mechanic Ant Anstead bring back the lost power by tuning up and enhancing the engine.

Mike Brewer and Ant Anstead try to arouse the passion of the Saab enthusiast community by restoring a rusty, non-driving 1973 Saab 96 to its past glory.

Inventive off-the-grid builders have created some of the world's most unique structures, including a cliff house retreat and a mushroom getaway.

Daring off-the-grid builders have created stunning waterfront homes, including an underground home on a rock quarry and an oceanfront tropical paradise.

The Raneys rescue a family descended from rock'n'roll royalty by reclaiming their homestead from the jungle on Kauai. But a dangerous flash flood causes issues.

Home Is Where The Yurt Is. In the Tennessee mountains, the Raneys constructs a massive yurt. They turn a rundown pond into a food source and create a workshop with a propane forge.

Using their own 40-acre homestead, the Raneys reveal the five essential watchouts for wannabe homesteaders seeking land to settle on.

The Raneys are called by a concerned uncle to save a stubborn Alaskan family facing bears, arsenic in the water, and winter closing fast.

A New York State Of Mind. The crew head to the Appalachian Mountains in New York to build a huge, antique log guesthouse for a couple who traded city life for country life.

That Car's Flying! Hurricane Idalia's 12-foot storm surge sweeps away Gulf Coast neighbourhoods as its winds overturn rush-hour traffic 350 miles away in Charleston, SC.

Being a truck driver isn't easy: long hours, huge loads and busy roads are just some of the issues they face. Truckers share their journeys.