Discovery HD

Experts attempt to train great whites using cues and challenges to test learning, memory, and decision-making in the wild.

A sonar recording may prove that a prehistoric monster stalks the seas around Kodiak Island. Researchers investigate the disappearance of thousands of airplanes.

Long Live King Crab! When the government closes the king crab fishery, captains must save an industry they worked to create. Plus, Sig pursues invasive Russian king crab in Norway.

While searching for Big Rose, an 18-foot white shark, a research team uncovers a huge population of enormous white sharks off Nova Scotia's coast.

Experts attempt to train great whites using cues and challenges to test learning, memory, and decision-making in the wild.

Guest judge, Pam Sutton, joins Mark, Digger and Tim as three series champions compete to make Popcorn Sutton's legendary corn whiskey.

Ever wondered how everyday items such as garbage trucks and ceramic composite brake discs are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as class and championship rings are made? Find out how these familiar objects are formed.

The team save a barn that once housed mules in the iron-mining boomtown of Low Moor, Virginia. As they work, they find evidence of the barn's industrial past.

Mark and the guys sit down to talk about a few of their favourite jobs. With special guests, never-before-seen footage and comical outtakes, it's time for some fun.

Parker brings in a brand-new wash plant to push him past 5,000 ounces. Plus, Buzz puts his reputation on the line with a gamble he may come to regret.

Tony goes rogue and buys a new wash plant to get his Indian River operation back up and running. Plus, Parker increases his gold target, pushing Rocksand to the limit.

Construction projects are stressful, especially if they are in the middle of nowhere. Incredible skill is needed to build on tricky terrain.

A couple faces sun, snow and a few slip-ups as they race to finish a modern, off-grid lodge overlooking Wisconsin's south shores of Lake Superior.

A beloved poodle is rushed to surgery. Four turtles, unable to eat, get their first vet visit in 43 years and Dr. Jeff and the team head out to operate on an alligator.

Dr. Jeff's team races to help a tiny dog to deliver a large puppy and save both lives. And, the team heads downtown to help homeless people and their pets.

Find out how air filters, billiard cues, ice sculptures and suits are made, as more everyday items are put under the microscope.

Find out how escalator handrails, highlighters, guitar strings and wigs are made, as more everyday items are put under the microscope.

Find out how traditional bows, coffee machines, mascots and hammocks are made, as more everyday items are put under the microscope.

Find out how fibreglass insulation, wooden ducks, gumball machines and exhaust systems are made, as more items are put under the microscope.

The Raneys rescue a single-father homesteader facing threats of rockslides and bears in a Montana box canyon. Marty and Misty face an uphill battle.

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.

As the Alfa build nears the halfway point, a torn bicep threatens to derail the project. Ant's wife is surprised to learn that the 158 is a single-seater.

Does My Chassis Look Big In This? Ant's 158 and injured arm are both progressing, but he still needs help. Meanwhile, the body is still in transit and might not fit the chassis.

Shark attack survivor Paul de Gelder and predator specialist Rosie Moore uncover what's fuelling a surge in bull shark aggression in Jupiter, Florida.

Experts analyse shark encounters caught on camera, using forensics to review bite marks and behaviour patterns as they wonder: What shark attacked.

A ghost hunter seeks out spirits from the gold rush in Skagway, Alaska. Tiny demonic creatures may be behind thousands of disappearances in the Triangle.

Captain Sig suddenly loses power as he battles to launch his new Norwegian fishing operation. Plus, Captain Rip Carlton races to save an injured deckhand.

Shark attack survivor Paul de Gelder and predator specialist Rosie Moore uncover what's fuelling a surge in bull shark aggression in Jupiter, Florida.

Experts analyse shark encounters caught on camera, using forensics to review bite marks and behaviour patterns as they wonder: What shark attacked.

When Zeke's custom sluice malfunctions, Emily tries to save the Clark's season. The Kellys gets too close to Vernon's claim and can Mr. Gold plug a risky leak.

Josh, Daniel and Mike put their family recipes on the line to see whose multi-generational moonshine heritage will weather the test of time.

Ever wondered how everyday items such as cocoa beans and bulk chocolate are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as apple pies and household radiators are made? Find out how these familiar objects are formed.

While Mark is on the road, the guys pick off a list of chores at home, including stacking the Hamlin cabin. Mark checks out an incredible timber-frame barn.

Mark and the team salvage every good log they can from an old double-pen barn in Pennsylvania so the logs can be used to build a guesthouse in upstate New York.

Tony tries to resurrect his infamous Dredge no.1. Parker brings in his last gold from Australia Creek and focuses the team on finishing the Money Pit.

Rick bets his season on firing up Monster Red. Tony's dredge suffers a major setback. Meanwhile, the McCaughans break out a crazy contraption.

Construction projects are stressful, especially if they are in the middle of nowhere. Incredible skill is needed to build on tricky terrain.

A father-son duo builds an off-grid home in Montana. The 720-square-foot home takes advantage of mountain winds by using a wind-turbine generator for power.

Dr. Jeff and the team head to Mexico to offer free veterinary care for poor families. Over one gruelling week they will treat hundreds of animals in need.

The Dog Who Won Jeff's Heart. A client brings in an unusual pet who is fast outgrowing his enclosure. And, Dr. Jeff treats a pet cat with multiple serious and mysterious injuries.

Find out how chains, cedar canoes, vinyl records and bagels are made, as more everyday items are put under the microscope.

Find out how windshields, English saddles, butter and electric guitars are made, as more everyday items are put under the microscope.

Find out how individual transporters, post clocks, drum heads and drums are made, as more everyday items are put under the microscope.

Find out how residential water heaters, air bags, jelly beans and ice resurfacers are made, as more everyday items are put under the microscope.

Marty faces his most daunting challenge ever in the rescue of a Tennessee homestead. He calls on past homesteaders and a home renovation team to help.

Ant hits week seven of his Alfa build and takes the team on a pilgrimage to see an original Alfa 158. He is starstruck and even squeezes into the beauty for a selfie.

Ant's engine for the Alfa 158 is still missing in action and he is losing patience. He's been working early mornings, late nights and weekends.

Ant tries to sweet-talk his way into taking the completed Alfa 158 to the US Grand Prix in Austin. But the car isn't done, and the crew must do the heavy lifting.

Ant's ambitious Alfa build is on the home stretch, but his new baby is due any day. And, he gets good news about his plan to unveil the car at the US Grand Prix.

Experts provoke orcas to strike, risking it all to reveal how killer whales hunt and take down great whites.

Prehistoric sharks rise from the dead as marine biologists investigate the superpredators that once ruled the seas.

A fairground on the city limits of Fairbanks is rumoured to be home to a dark spirit. Ghost hunters try to contact this powerful poltergeist.

One Hell Of A Story To Tell. Captain Rip heads into an Arctic storm to attempt the riskiest helicopter rescue in recent history. Plus, John fights to save the Time Bandit at anchor.

Experts provoke orcas to strike, risking it all to reveal how killer whales hunt and take down great whites.

Prehistoric sharks rise from the dead as marine biologists investigate the superpredators that once ruled the seas.

With the ice season in high gear, flu hits the dredgers like a plague, threatening to knock everyone operation out. Plus, a mistake by father Steve could end his quest.

Two legal distillers compete with an outlaw moonshiner to determine who can turn the scraps from winemaking into the best jar of grappa, Italy's original moonshine.

Ever wondered how everyday items such as incense cones and model jet engines are made? Find out how these familiar objects are formed.

Ever wondered how everyday items such as beet sugar and electric roadsters are made? Find out how these familiar objects are formed.

Anthony and his team build an adrenaline-filled adventure pool complete with natural beach entry, rushing waterfall, a massive diving-rock and splashdown zip line.

Anthony and crew set out to build a backyard retreat in the heart of wine country, but a steep grade, unstable clay soil and unpredictable cause major problems.

Parker's crew accidentally unleashes a flood of water that wreaks havoc. Rick runs his first full week at Rally Valley. Tony revives an old wash plant.

Tony calls his son to help fire up nearly every plant he can, including Dredge no.1. Parker squeezes every ounce of gold out of his Dominion Creek claim.

A couple builds a home with self-sustaining features near the Ozark National Forest. But the mountainside terrain is in a location hit by flash foods.

Dr. Jeff performs a risky new surgery to save a puppy's leg. Will it be good enough to make this dog walk again? Plus, an abandoned cat's x-ray tells a shocking story.

When a puppy is found abandoned with a broken leg, Dr. Jeff is his only hope to walk again. Plus, the team cares for a Boston Terrier who shows signs of a serious illness.

Find out how amphibious vehicles, putters, model boats and coloured crayons are made, as more everyday items are put under the microscope.

Find out how footballs, electric guitar amps, marbles and aeroplane propellers are made, as more items are put under the microscope.

Find out how engine blocks, jawbreakers, drum shells and drums are made, as more everyday items are put under the microscope.

Find out how lighters, fossils, hockey pucks and high-pressure cylinders are made, as more everyday items are put under the microscope.

Bus-dwelling Virginia homesteaders struggle in the wilderness. The Raneys urgently help a couple who sent their son away until the homestead can thrive.

With the deadline near on his Alfa build, Ant still has to get it running and finalise the design. So, he seeks out legendary designer Chip Foose for advice.

Ant must strip the Alfa 158 down, paint every part and rebuild the car for its debut at the US Grand Prix. Will its performance on the track live up to expectations.

Dean takes on the sale of an extremely rare Alfa Romeo. Meanwhile, racing driver Archie Hamilton must decide between two £100k supercars.

Wildlife biologist Forrest Galante explores America's strangest alien sharks in celebration of the nation's 250th anniversary.

A scientist hunts for a possible radioactive shark killer near an old nuclear dumping ground in New York that's ringed with makos and great whites.

A team of ghost hunters investigate an abandoned gold mine. Plus, numerous sightings suggest a fearsome Yeti inhabits the Alaskan mountains.