Flying Whales And Hippo Sunscreen. Experts examine how humpback whales leap so far out of water. Why do dogs tilt their heads? Why do animals swarm? How do spiders shed their skin?

Smart Pups And Fish Baths. Experts test to see if wild wolves are smarter than domestic dogs with an interesting experiment. Plus, can spiders really fly? And, how do polar bears keep warm?

Headbanging Birds And Unsinkable Ants. Experts look at why ants don't drown. Why don't woodpeckers get headaches? And, how does a 15-foot octopus escape through a three-inch hole?

Whale Songs And Cool Canines. Experts test to see how anteaters eat so quickly. Plus, why do male humpback whales sing and how do they do it with no vocal cords?

Super Sloths And Ostrich Marathons. Experts test how good dogs' noses are at picking up scents under water. Plus, how and why do fireflies glow? And, how do ostriches run so fast?

Tender Loving Care. Dr Jeff fights to save a bearded dragon which is having a seizure, and Dr Amy is put to the test when a routine cat neuter turns complicated.

Risky Business. Dr. Jeff must act fast to save a kitten with head trauma. Dr. Amy treats a dog with a weak heart. And a Good Samaritan helps a family when their dog is hit by a car.

A Second Chance. Dr. Jeff and his team helps two Chihuahuas found abandoned in a storm drain. Then Dr. Jeff makes a discovery when a cat's odd eating habits put its life in danger.

Mountain Emergency. A medical emergency on the Wolfpack's ranch forces them to be more resourceful. And, Gabe's family are concerned when he makes a hasty leap towards marriage.

Winter Is Here. As the first snow falls, the Browns make a risky attempt to move their shelters closer to the barn. Noah prepares his pregnant wife Rhain for her first bush winter.

King Of The Mountain. The Wolfpack kids have divided their land between themselves. They're keen to finish building their houses in time as Noah prepares for the baby's arrival.

The Wolfpack vs. The Wolf. The Browns raise the defences when they find grisly evidence that a new predator is stalking the ranch. And, Gabe builds an apartment for him and Raquell.

Clear And Pheasant Danger. The family join a competitive pheasant hunt ahead of Thanksgiving. Then, Billy and Ami surprise the siblings with new additions to the homestead.

Motorsport icon Sara Price embarks on an epic quest to become the first American woman to win the Dakar Rally.

Stack Fire. Sig and Jake find themselves on a collision course. Crew tensions explode on the Time Bandit, giving Keith a chance to lure Freddy back to the Wizard.

A Little Less Conversation. Woodworker Saf and stained-glass artist Aimee build a spectacular storage unit featuring a stained-glass homage to the King of Rock 'n' Roll.

Veterans' Retreat. Chase Morrill and his team take on a project from a retired US Army veteran, turning a lakeside cabin into a lodge for combat-injured veterans and their families.

Alone And Terrified. For the first time ever, two survivalists are forced to spend the first night of their 21-day challenge in the wilds of Botswana completely alone.

Danger Close In Dakota. When a violent EF2 blows up a farm, Brandon and Tanner race to the scene. As Jordan shows his brother how to chase, Connor gets his best tornado yet.

Mysteries Of American History. Josh Gates explores American history, including a shocking theory about John Wilkes Booth, and myth-busting truths behind Paul Revere's midnight ride.

if the drug war is real, then why are the cartels winning? His investigation uncovers shocking insights.

The Interstellar Mysteries. Interstellar space is the space between the universe's stars. New discoveries reveal that it's not empty and unremarkable as previously thought.

Did The Big Bang Really Happen? New discoveries lead scientists to question if the Big Bang really happened. They investigate if it was the start of many multiverses.

You're My Dog. Junior designs a monster trike and discusses taking a big financial risk with Rachael. Josh builds a bike for the Hudson Valley SPCA, headed by Joanie and Senior.

Bonkers In Yonkers. The Teutuls take the restored Buick to Senior's old neighbourhood. Senior and Junior discuss whether building a bike together would damage their relationship.

Teleshopping.

Teleshopping.

Fiat 600. Mike and Elvis find and fix up a recently imported Fiat 600. It needs a lot of work, including a full repaint and an engine overhaul.

Jaguar S-Type R. Mike snaps up a Jaguar S-Type with 195,000 miles. After some repairs, the boys put it up against another model with just a tenth of the miles.

Ford Transit. Mike gets his hands on a car that has evaded him for decades, a Mark 1 Ford Transit. Elvis is delighted - until he realises everything he needs to do.

a Lotus Europa. Elvis is excited - until he takes it out for a spin.

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

MGB Roadster. The boys mark the MGB's 60th anniversary in style by buying and fixing up one of these classic motors. But the upgrades come with hefty costs.

Vermont Stone House. A novice builder tries to construct a stone cabin in Vermont's White River Valley but his inexperience and the harsh winter push him to his limits.

Ohio Valley Hut. Two brothers are building a high-end, off-grid vacation home in the middle of their 2,000-acre cattle ranch. They only have four months to complete it.

On Thin Ice. Marty attempts a treacherous trip across a frozen river. And, Misty and Maciah build a pump house to secure the family's new water source on the Upper 20.

Count Your Blessings. The frozen access road to the Upper 20 becomes impassable, so Marty devises a risky way to transport massive equipment up the 300-foot icy cliff.

Dead Of Winter. With several critical projects to complete, the Raneys face a season-ending winter storm. The family rushes to make the cabin liveable through winter.

Wolves At The Door. The Raneys help the Johnson family who have no drinking water or food sources. Their dogs have been killed by a mystery predator and worry they are next.

Trapped. The Raneys assist two Montana homesteaders who face being trapped on their property. When a medical emergency strikes, the Raneys face their first ever failed rescue.

Fire Country Fury. A stalled dream in California's fire country pushes the Raneys to their limit, as they urgently need defensible space - but Marty must leave early.

Cabin At A Crossroads. Mark finds a cabin from when pioneers started using sawmills. The crew also discovers their showroom manager has a surprising personal connection to the home.

Stack Fire. Sig and Jake find themselves on a collision course. Crew tensions explode on the Time Bandit, giving Keith a chance to lure Freddy back to the Wizard.

A Family Affair. 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.

We Build Bitchin' Rides. Dave and the team start a one of a kind build they have never attempted before, a 1964 Ranchero. But what there is underneath the metal sets the team back.

24 Karat Magic. The Ranchero build is an epic achievement for Dave and the team, but will the client see it the same way? And will Dave find the perfect name for the perfect car?

The Little Sister. A Canadian who bought the '62 Volkswagen Safari Bus wants a sister car for his daughter, upgrading a Volkswagen Bug for a similar look and smoother ride.

Space Shuttle Tribute Bike - Part 1. The team is building a NASA-themed bike in memory of the two crews lost in space, and heads to the Johnson Space Centre for inspiration.

Space Shuttle Tribute Bike - Part 2. The guys head to the Johnson Space Centre to reveal the bike to NASA and the astronauts that returned home on the Discovery space shuttle.

Teleshopping.

Teleshopping.

How do they make binoculars, sparklers, rubber boots and circular saw blades? Find out as more everyday items are put under the microscope.

How do they make anatomical models, jukeboxes, tortilla chips and spark plugs? Find out as more items are put under the microscope.

Scandinavia. Pete is on a treehouse holiday to the pine forest glory of Scandinavia, starting with Norway's magical TreeTop Hotel and hitting the Swedish treetops.

Lost In The Forest II. Pete goes behind the scenes with unseen footage, bloopers and lots of extra treehouse tours - including a peek inside Dale Earnhardt Jr's arboreal escape.

A Special Kind Of Crazy. At his new dive site Dustin's life is endangered after being overpowered by raging white water. After heavy rain, Fred's crew has a deadly encounter.

In Too Deep. Dustin risks the rest of his season on a move upstream to raging waters in a quest to add to his gold haul. After a brush with death, Fred must come up with a new plan.

Bigger And Badder. Custom RV owners show off their builds including a '50s retro atomic retro camper and a rugged race rig. Plus, Marathon Coach builds a luxury family-friendly RV.

World's Fastest. Featherlite builds a Wall Street-inspired fleet of coaches for a demanding client. And, the world's fastest RV revs up for a thrilling ride.

Unicorn Of The Sea. Narwhals are the unicorns of the sea, but what do they use their extraordinary tusks for? What animal has transformed Yellowstone? Experts explain it all!

Rattleless Rattlesnake. Experts explain where to find an enchanted underwater forest. Plus, why have some rattlesnakes on a remote Mexican island lost their rattle?

Elephants in the Room. Experts explain why a herd of wild elephants checks into the same hotel every year. And, what is causing giant bubble rings off the coast of Portland, Maine?

Octopus Throwdown! Shocking footage shows a seal throw an octopus at a kayaker. What caused this behaviour? And, why is a moth drinking from the eye of a bird in the Amazon jungle?

How do they extract iron ore from one of the most remote mines on the planet? And how do they make chandeliers that are fit for a queen?

How do they forge the blades to crack open oyster shells? Plus, how do scientists in a lab grow the synthetic diamonds of the future?

How do they make cheddar, the world's most popular cheese? How do they breathe life into Rususci Anne - the plastic woman that teaches CPR?

How do Ford produce the ubiquitous white van, the Transit? Plus, how do they ensure the Driza-bone coat lives up to its name?

The Last Sunset. While Tyler and Ashley trek 15 miles to a lake cabin in search for food. Bob leaves home to see his daughter and assess the damage of his crashed plane.

Into the Darkness. The darkness has arrived and Heimo gets caught miles from home in the wilderness. Plus, the Lewis Family prepares for a life changing event.

Baja Bug. Mike and Elvis turn a VW Beetle into a Baja Bug for racing across sand dunes. But with just 5 days for the build will their project hit the skids?

The Magic Bookcase. Ciarán sets out to create a gothic-style bookshelf with a series of unexpected secret compartments that will test his cabinet-making skills.

Oyster Farm Shack. Builder Chase Morrill and his team rebuild an old oyster shack for a working farm. They have their tightest deadline to date and a budget of only $25,000.

Chateau Of Horror. Heather and Phil travel to the most haunted chateau in France. They investigate terrifying stories of hostile ghosts and savage murders.

Nuclear UFOs. In the aftermath of Japan's 2011 Fukushima nuclear disaster, citizens began reporting UFOs. Phil and Jess enter a radioactive wasteland to discover the truth.

Dusty Finds A Gun. A bag has been left behind at Arlanda airport - it smells of death and contains something that looks like bones. Plus, Dusty the dog finds a gun.

Oyster Farm Shack. Builder Chase Morrill and his team rebuild an old oyster shack for a working farm. They have their tightest deadline to date and a budget of only $25,000.

Chateau Of Horror. Heather and Phil travel to the most haunted chateau in France. They investigate terrifying stories of hostile ghosts and savage murders.

Petal To The Gold Metal - Part 2. The mining season's end looms. Shawn unleashes his full fury inland. Joe gambles with marathon dives. Chris fights powerful currents for his payday.

Spirit In The Sky. Digger gets Daniel to attempt the first large-scale run of his milk-based liquor recipe. Richard combines Digger's sea aging with his recipe for his best liquor.

Teleshopping.

Teleshopping.

How do they recycle metal and make pencils and coffee? Find out as more everyday items are put under the microscope.

How do they make javelins, cuckoo clocks, and windscreen wipers? Find out as more everyday items are put under the microscope.

Double Treehouse Extravaganza. In Maine, a couple wants a magical treehouse with a grown-up twist. In Massachusetts, Pete raises the curtain on a Tudor-style theatre treehouse.

Under Pressure. Dustin's crew make an exciting discovery that pushes them to test their limits. Fred's crew is dangerously deep and under pressure to get down to bedrock.

Buried Alive. A storm turns McKinley Creek into a raging torrent, but Dustin is unwilling to call it quits. Fred's fears come true as the walls of his dive hole come crashing down.

Dining Table / Motorbike / Chess Table. Alex is asked to make a beautiful bench. Robin works on a surfboard coffee table, and Ella builds an aviation-themed garden planter.

Cricket Lamp / Workbench / Bird Table. Ella builds a unique bird bath for a woman's amazing foster parents. Alex creates a personalised toolbox. Saf makes a stylish drinks cabinet.

Alligator Bodyguards. How can a dung beetle standing on its head roll a ball in a straight line? Do egrets ever regret hanging out next to hungry alligators? Experts explain.

Giggling Rats. Experts examine incredible natural phenomena. Which animals get the giggles? Why do San Francisco's sea lions mysteriously swim away - all at once?

Big Cat Screaming Match. Experts examine incredible footage of a lone dolphin that gets muddy. Plus, why is it possible that a snake could exist totally undetected by predators?

The 500-Year-Old Shark. Experts examine footage of crows leaving gifts in Seattle. Plus, could a shark really be older than America? And, what is making crop circles in the sea?

How do they make wood-burning stoves that bring warmth to the Norwegian winter? Plus, how did they build the synthesiser that changed music forever?

How do they assemble the reinvented Morgan 3 Wheeler? Plus, how do they protect firefighters' hands from heat, flame and chemical attack?

How do they make wind turbines with twice the wingspan of a Boeing? Plus, how do they mould car tyres from the ooze of a tree?

How do they make the tank piercing super bullet? Plus, how do they forge the infamous torture weapon, the dentist's drill?

Nothing Lasts Forever. As the end of winter nears, the residents look toward to the future. Bob trains Ruger to be a hunting dog, while Ray prepares for a life without his daughters.

The End Of Darkness. Sunlight finally returns to the refuge. Heimo is stopped in his tracks by -50 degree temperatures, and The Seldens make their home in a new cabin.

VW SP2. In Sao Paulo, the boys buy a Brazilian designed VW SP2. It's a dream come true for Mike, but the car lacks power and Elvis has to give it some brawn.

Mini Moke. Mike and Elvis head to sun drenched Portugal where the iconic Mini Moke has earned cult status. It's a car with a very special place in Mike's heart.

Hunger Game. John makes an emergency trip to St. George Island to feed his hungry crew. Sig and Jake lure Bairdi crab to their own side of a maritime boundary.

Divide And Conquer. Chasing a royalty-free payday, Jared bets half his crew on an abandoned claim. With $1m due in 8 weeks, it could win - or sink - the Forever Claim.

The Madhouse. Josh, Phil and Heather investigate the notorious Trans-Allegheny Lunatic Asylum, where thousands died after disturbing medical procedures.

Smuggled Goods in Skåne. In Skåne, Stefan stops a drunk driver. A closer look in his car reveals large quantities of smuggled goods. Alex looks for cannabis at a party cruise.

Hunger Game. John makes an emergency trip to St. George Island to feed his hungry crew. Sig and Jake lure Bairdi crab to their own side of a maritime boundary.

Divide And Conquer. Chasing a royalty-free payday, Jared bets half his crew on an abandoned claim. With $1m due in 8 weeks, it could win - or sink - the Forever Claim.

Make Or Break - Part 1. 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.

Burning Down The House. As Mark and Digger undertake their large-scale bootleg to Nashville, the law makes an unwelcome return. Plus, Mexican moonshiners make Tim liquor with meat.

Teleshopping.

Teleshopping.

How do they make technical glass, washing machines, playing cards and crossbows? Find out as more items are put under the microscope.

How do they manufacture cine cameras, glass Christmas decorations, and giant tyres? Find out as more items are put under the microscope.

Rusty Rooted River Shack. Pete and the team are off to build a charming, rustic river shack themed treehouse along the banks of the Mississippi.

The Alaskan Treetop Sauna. Pete is off to build his second Alaskan treehouse! He sets out to create an outside-in treehouse and heats things up by installing a sauna in the trees.

To The Edge. 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.

Roll Of The Ice. Dustin takes the biggest gamble of his life, but will doubling his crew mean double the reward or double the danger? Meanwhile, Fred drops a bombshell on Dustin.

Guitar Case / Side Table / Boat. Alex builds a foldable chair for a beloved basketball coach. Robin creates a three-piece mirror, and Charis makes an ottoman-style seat.

Viking Bench / Tea Set / Medal Display Case. Ella and Charis build a remarkable sculptured sign language table. Alex creates a vintage-style bookcase. Saf works on a pair of stools.

Stripeless Zebra. Why would goats risk their lives to climb an almost vertical wall? Plus, what happens when a zebra has no stripes? Experts explain this and more!

Hot Cheetah. Why have a pair of giraffes turned white in Kenya? Plus, why are the world's fastest land animal not always successful when hunting? Experts examine this and more!

Bug Mathematician. How do bats avoid bumping into each other in the middle of the night? Why did a bottlenose dolphin seek out a diver's help? Experts examine this and more!

Times Square Bee Swarm. Why would 25,000 honeybees swarm a hot dog stand in the middle of Times Square? Why would a bat hunker down in the snow? Experts examine this and more!

How do they make giant floating power stations that provide power around the world? Plus, how do they fabricate the world's smallest aircraft?

How do they create coloured crayons used by children and artists around the world? Plus, how do artisans and craftsmen create treasured mirrors in India?

How do they power the next generation of race cars that run on electricity? Plus, how do they make mead - the favourite drink of the infamous Vikings?

How do they build the steam-powered paddleboats that cruise the Mississippi River? And, how did they create the defence system called 'the waterwall'?

Home Again. 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.

Only the Strong. The countdown to winter continues as Heimo breaks ground on the new cabin, while Bob and his daughter embark on a river journey to the cabin where she was raised.

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

Won't Back Down. 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.

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

Superbikes. 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.

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

Not Telling The Truth. 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.

Won't Back Down. 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.

Superbikes. 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.

Make Or Break - Part 2. 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.

High Price Of Success. 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.

Teleshopping.

Teleshopping.

How do they manufacture microphones, hot tubs, AstroTurf and beer steins? Find out as more items are put under the microscope.

How do they make hot rods, decorative eggs, baseballs, and fire hose nozzles? Find out as more everyday items are put under the microscope.

Off-The-Grid Getaway. Pete creates an off-the-grid escape that's all about peace, love, and treehouses. Once built, the owner adds a massive hammock in the trees.

a treehouse B&B built for romance. It will have stained glass, a bedroom - and the biggest bathroom Pete has ever built.

Fresh Blood. Dustin puts his money and reputation on the line, doubling down on two claims. He brings in fresh recruits who quickly learn the dangers of mining in white water.

Shake Up. Under pressure to get his first gold of the season, Dustin pushes both crews to their limits. It gets even more intense when the dangerous mine site is rocked by an earthquake.

Writing Desk / Firepit / Water Feature. The team take on three ambitious timber projects. Alex creates a unique hammock. Robin builds a bike storage rack.

Portable Bar / Edinburgh Coffee Table / Candelabra. Robin creates the ultimate desk for a warm-hearted DJ. Saf works on a convertible bench and table, while Alex builds a giant game.

Steve's Legacy Continues. Steve Irwin's son Robert follows in his footsteps. After months of training, it's time for him to solo feed the most notorious croc at the Australia Zoo.

Tiger Eyes. Hunter the tiger is being sedated for his annual eye check, allowing Terri to get close. Bindi puts on a birthday party for Minibus - the Zoo's oldest Wombat.

How do they make modern paving stones and how has the process changed over thousands of years? Plus, how do they create a traditionally tailored tuxedo suit?

How do they fabricate fire gloves for emergency services personnel? Plus, how do they create the enamel that is used in bake-wear around the world?

How do the islanders of the Outer Hebrides use pedal power to weave world-famous Harris tweed? And, in Iceland, how do they prepare fermented shark?

How do they make the world's most expensive and luxurious beds? And, how do they deliver supplies and equipment to the International Space Station?

Survival Mode. Preparations for winter continue and focus centres on finding food. Heimo seeks out caribou meat, while Tyler and Ashley score big game.

Alone. Autumn continues in the bush as the Last Alaskans settle into wilderness solitude. Battling loneliness, Bob Harte welcomes a visitor to his cabin.

SEAT 600. In Barcelona, Mike and Elvis try to restore a SEAT 600, but an unexpected breakdown and some nasty bills put the boys' profit margin in peril.

Anadol STC16. Mike and Elvis travel to Turkey in search of one of the rarest cars they've ever bought, the Anadol STC16, but the one they find needs major work.

Ranger In Danger. A South African ranger and a Texan wilderness guide attempt to survive 21 days in a remote Thai jungle against relentless monsoons and king cobras.

Tornado Alley Weed Farm. As an Oklahoma warm front unleashes long-track tornadoes, one twister grows to EF-3 strength, destroying a weed farm and forcing Reed onto dirt roads.

What Lurks In Loch Ness. Phil and Heather investigate the elusive Loch Ness Monster. Joined by actor and monster hunter Rhys Darby, they journey deep into the Scottish wilds.

Forbidden Foods. A suspicious Tomas discovers large amounts of meat in a couple's luggage. A postal car is checked in Skåne - and it contains a cremated person.

Ranger In Danger. A South African ranger and a Texan wilderness guide attempt to survive 21 days in a remote Thai jungle against relentless monsoons and king cobras.

Tornado Alley Weed Farm. As an Oklahoma warm front unleashes long-track tornadoes, one twister grows to EF-3 strength, destroying a weed farm and forcing Reed onto dirt roads.

Gold Can Mend A Broken Heart. Shawn follows old mining evidence, while Kris suffers a catastrophic failure on the All In that threatens to end both his season and mining career.

The Harder They Fall. After losing their water source, Mark and Digger attempt to dig out a centuries-old spring. Richard and Daniel form a Master Distiller dream team.

Teleshopping.

Teleshopping.

How do they manufacture accordions, pineapples and artificial joints? Find out as more items are put under the microscope.

How do they can sardines, and manufacture giant valves, barographs and disposable nappies? Find out as more items are put under the microscope.

Treetop Medieval Fortress. Pete builds a citadel fortress for a couple who loves all things medieval. A high tower will hold a round table and thrones, as well as a glass floor loft.

Mountainside Bulldog Bungalow. A couple dreams of a treehouse that will recapture mountain vistas. Pete creates a bungalow with large windows to take in a view that was once lost.

Who's The Boss. Dustin makes a surprise announcement that divides the crew. Fred returns to McKinley Creek with a lead on new ground, rumoured to be the home to a fortune in gold.

Groundbreaking Gold. Fred opens the door to a new site. After a bust-up with Fred, Kayla makes a discovery that will change the course of their entire season.

Table Tennis Table / Horses Head Statue / Upcycled Bench. Robin and Micaela build a gift for a charitable hairdresser. Meanwhile, Charis works on a vinyl record display case.

Swing Bench / Rocking Chair / Snooker Jewellery Box. Olympic athlete Tom Bosworth asks Saf to make a gift for his coach. Charis treats a special canine to a deluxe dog bed.

Giraffe Road Trip. Terri, Bindi and Robert prepare Croc One, Steve Irwin's research ship, for a special mission to release an endangered sea turtle back into the wild.

Robert, King Of Cobras. Robert follows in Steve's steps wrangling Utah, a highly venomous King Cobra. A vet from the zoo's hospital, Dr. Amber, visits Tandora to treat wild Koalas.

How do they make the distinctive Borsalino hat worn by Indiana Jones? And, how do they make a bicycle which can fold up to a tenth the size of a regular bike?

How do they make the world's most famous electric guitar, the Fender Stratocaster? And, how do they make Swedish fermented cod roe Kalles caviar?

It's been tipping over for 800 years - what's the gravity-defying magic behind Pisa's leaning tower? And, how are chocolate digestive biscuits manufactured?

How did the ancient Greeks invent parchment with techniques still used today? And how do they make shuttlecocks, the fasting moving object in sport?

Winter's Edge. The race begins to secure food and shelter before the snow arrives. Heimo's family hunts for caribou, but will a hungry bear stop them in their tracks?

On Thin Ice. The Seldens embark on a 4-day trapping loop that could lead them through dangerous conditions. Heimo must compete with a pack of wolves to secure a moose for winter.

Skoda 110R. Mike and Elvis try to give a rare Skoda 110R a rally inspired makeover, but they soon discover it's a bigger and more expensive job than they thought.

The Goldy Locks. Freddy and Juan rescue their first all-female mining crew, who are plagued by constant shutdowns on Arizona land rich in legendary gold.

the Donner Party disappearance, a secret Cold War base in the Arctic, and the ghost ship Mary Celeste.

Ghosts In The Canyon. What happened to 16-year-old Theresa Bier in the remote forests of California? Locals will say Bigfoot took her, but investigators want answers.

Savannah, Georgia. They investigate horrifying reports of violent paranormal activity.

Hidden Puppies. A man checked at Arlanda airport is attempting to smuggle a lot of gold. In a car in Kapellskär, Malin discovers hidden puppies.

the Donner Party disappearance, a secret Cold War base in the Arctic, and the ghost ship Mary Celeste.

Ghosts In The Canyon. What happened to 16-year-old Theresa Bier in the remote forests of California? Locals will say Bigfoot took her, but investigators want answers.

Gold Can Mend A Broken Heart 2. Shawn follows old mining evidence, while Kris suffers a catastrophic failure on the All In that threatens to end both his season and mining career.

More Cops Less Copper. Mark and Digger attempt to make Scotch on a Popcorn Sutton-designed pot still. Amanda joins Mark and Huck in the hills only to find all their copper stolen.

Teleshopping.

Teleshopping.

Decorative Crabs And Loud Lions. What are lions saying when they roar? What are leaf cutter ants doing with the leaves they collect? Experts answer these questions and more!

Fish Farts And Giant Eggs. Why do domestic cats find it so hard to get down from trees, and how have two jungle cats evolved? Plus, why do kiwi birds lay huge eggs for their size?

Secret Transformation. How do caterpillars transform into butterflies in their cocoon? Plus, why are cats' tongues the way they are? Experts answer these questions and more!

Deadly Dinner. Why are some cats cross-eyed? How do meerkats eat poisonous scorpions and how can hippos sleep whilst holding their breath? Experts answer these questions and more!

Eagle Eye. How does a squirrel take on a dangerous rattle snake? What makes eagles' eyes so powerful? Plus, why is the planet overrun with bugs? Experts answer these questions!

Black And White Secrets. Do parrots really know what they're talking about? How do electric eels not electrocute themselves? Plus, why are pandas black and white?

Sioux Journey. When a beloved dog needs knee surgery, Dr Jeff may be his only hope. Then Dr Nichols and Dr Petra team up to fix a cat's broken elbow.

Turning Point. Dr Jeff battles to save a puppy with broken ribs and internal bleeding. And Dr Baier attempts surgery he's never done before to treat a family's beloved rat.

New World. After 25 years in a tiny clinic, the team is moving to a new clinic with twice the space. When Dr. Jeff repairs a dog's knee, he makes a special connection with her owner.

Fowl Weather Friends. Birdie goes on a treacherous hunt to bring home meat for the family and save her chickens from slaughter. Later, Noah constructs an automatic diaper machine.

The Chaos Before The Storm. Winter is approaching and Billy faces a new medical crisis. Plus, a big storm forces Noah and Rhain Alisha to make a tough decision.

The Big Push. The Browns struggle to finish their homes as the ground begins to freeze. Later, Rhain-Alisha goes into labour and the Wolfpack race to be there for the birth.

Wind And Water. The Browns kick off an ambitious plan. Bear and the siblings throw caution to the wind on a critical first project disassembling and transporting a 50-foot windmill.

Bears Of A Feather. A hungry bear breaks into Noah's tent and terrifies the livestock. Later, the windmill assembly takes the siblings to dangerous new heights.

Won't Back Down. 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.

Hunger Game. John makes an emergency trip to St. George Island to feed his hungry crew. Sig and Jake lure Bairdi crab to their own side of a maritime boundary.

The Magic Bookcase. Ciarán sets out to create a gothic-style bookshelf with a series of unexpected secret compartments that will test his cabinet-making skills.

Oyster Farm Shack. Builder Chase Morrill and his team rebuild an old oyster shack for a working farm. They have their tightest deadline to date and a budget of only $25,000.

Ranger In Danger. A South African ranger and a Texan wilderness guide attempt to survive 21 days in a remote Thai jungle against relentless monsoons and king cobras.

Tornado Alley Weed Farm. As an Oklahoma warm front unleashes long-track tornadoes, one twister grows to EF-3 strength, destroying a weed farm and forcing Reed onto dirt roads.

the Donner Party disappearance, a secret Cold War base in the Arctic, and the ghost ship Mary Celeste.

Ghosts In The Canyon. What happened to 16-year-old Theresa Bier in the remote forests of California? Locals will say Bigfoot took her, but investigators want answers.

Battle Of The Dark Universe. Dark matter and energy battle for the cosmos and the winner will determine the universe's fate. New discoveries may reveal which force will win.

Cassini's Final Secrets. For 20 years NASA's Cassini spacecraft revealed Saturn's strange secrets until it vaporized in its atmosphere. Now, fresh data points to new discoveries.

Rick's Bike - Part 1. Senior decides to surprise Rick and tells him that the next bike that they build will be for him. Mikey comes in to help Rick and acts as his inspiration.

Rick's Bike - Part 2. Fabrication continues on the Rick Bike, as the guys pitch in to finish this old school bike for Rick to keep.

Teleshopping.

Teleshopping.

Triumph Dolomite Sprint. It's the 50th anniversary of one of British motoring's forgotten heroes, the Triumph Dolomite Sprint. So, of course, Mike and Elvis have to get one.

it turns up in pieces on a trailer. If they can revive it, they'll take it on an epic drive through the Cairngorms.

can Elvis' refurb prove it doesn't deserve the label?

a Maserati 4200GT for under £10k! Under the hood is a Ferrari V8, but can Elvis fix the potentially costly gearbox and clutch issues?

Toyota Landcruiser. Mike and Elvis tackle a classic Toyota Landcruiser. Mike takes a gamble and imports an original 70s one from Japan, not knowing what state it will arrive in.

Volvo 240 Torslanda. Mike tracks down one of the most iconic estate cars of all time, the Volvo 240 Torslanda, but it's seen better days. Elvis gets creative with metal to revive it.

Mountain Timber Frame. A man who has always dreamed of living off the grid needs to finish his tricky build before winter arrives. He has taken on a huge project in upstate New York.

Appalachian Underground. A man surprises his wife for their wedding anniversary. He secretly builds a holiday home with an L-shaped eco-shell to blend into the surroundings.

Drowning. In Hawaii the Raneys attempt to save two homesteaders whose dream homestead lays a flash-flood zone. As the weather closes in, can they save the property from the water?

Honey I Torched The Homestead. In Oregon, the Raneys are called in to help snowbound homesteaders. Exposed to local predators, they worry about the region's forest fires.

Homestead of Horrors. There's a nightmare in North Carolina. A couple's ramshackle cabin has exposed wires in the shower livestock decimated by predators. Can the Raneys help?

Grizzly Bait. Arctic temperatures and a hungry grizzly wreak havoc on a struggling homestead. The Raneys take action with big builds including a blacksmith shop - but tragedy strikes.

When Cows Attack. The Raneys arrives at a homestead threatened by heat, coyotes and even cows. Disaster strikes when Marty attempts to protect livestock with a massive build.

Two Miles High And Dry. In their highest altitude rescue yet, the Raneys help a Colorado family secure water and shelter before winter cuts them off from the world.

Stubborn As A Mule. 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.

Hunger Game. John makes an emergency trip to St. George Island to feed his hungry crew. Sig and Jake lure Bairdi crab to their own side of a maritime boundary.

Superbikes. 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.

A Caldera-What? An old build is back for new customisations and a new name. With Kevin out of town, Dave tries to sneak a personal project through the doors.

Fiberglass, Fiberglass And More Fiberglass. One of Dave's favourite designs is the Mercedes Gul-Wing, and a client has a kit version. But it has many flaws which need addressed.

Green For The Money. Every defect with the Mercedes Gul-Wing has finally been addressed, but questions and challenges remain. Will the client pick Kevin or Dave's vision?

Fantasy Bike - Jeff Clegg. One lucky fan's dreams come true as OCC head to Phoenix to surprise him and get inspiration for this chopper.

Fantasy Bike - Susan Morisset. The second winner is revealed as the guys head to Texas to spend some time with her and learn about what she wants her chopper to look like.

Teleshopping.

Teleshopping.

How do they manufacture heated skate blades, gliders, hand bells, and fire hoses? Find out as more everyday items are put under the microscope.

How do they make induction hobs, truck scales, Tetra Pak containers and harmonicas? Find out as more items are put under the microscope.

Shaq Takes It To The Trees! Pete builds an all-star speakeasy for basketball legend Shaquille O'Neal. He creates a decagonal structure with soaring ceilings and extra-wide stairs.

International - France. Treehouse visionary Alain Laurens joins Pete on his travels through France, where he shares his fantastical structures that redefine what a treehouse can be!

Boiling Point. Fred celebrates his 78th birthday by diving for gold. Kayla's crew is on a hot streak, but their luck runs out as tensions between crew members reach a boiling point.

Gamblin' Man. In a bid to rescue his season, Dustin plans a daring double dive to get gold. Meanwhile, Kayla's crew struggles to adapt after losing a crew member.

Terry hopes to make some money on a Toyota Corolla to raise the funds for a special anniversary gift. The team rush to complete two important export deals.

Terry thinks he can make a quick profit on a vintage motorhome. Jemma brings in a female mechanic, while Jon is given a chance to prove himself.

Bindi's Lemur Island. Robert helps out with a health check for the zoo's unusual-looking alligator snapping turtles. Terri and Bindi welcome seven new Lemurs from the US.

Irwin African Adventure. Following Steve's global conservation dream, the Irwins go to South Africa. Terri helps release a wild leopard. Bindi meets an all-female anti-poaching team.

How do they make smooth writing ballpoint pens that don't leak or fade? And, how do they make pizza for soldiers on the frontline?

In Cremona, how do they make modern violins that sound as good as the legendary Stradivarius? And, how do they build houses with volcanic rock?

How does a Dutch company make the world's fastest superyachts? And, how do they make new space suits that weigh and cost the fifth of the previous design?

How is Parma ham, the most famous ham in the world, made? Plus, how do they make rowing machines, and how are the iconic London Underground signs made?

Dark Winter. It's the dead of winter and the Last Alaskans move through the icy Arctic. Heimo still needs a moose, while the Seldens embark on the next part of their journey.

Fire And Ice. Heimo and Edna say a final goodbye to their oldest cabin, while Charlie meticulously builds his very first and reflects on his future in the bush.

Fiat Barchetta. Mike and Elvis travel to Turin and set about trying to rescue a rundown Fiat Barchetta. Unfortunately, parts prove almost impossible to find.

a hedgehog-themed birdbath that's also a tribute to Queen guitarist Brian May.

Bunganuc Creek Landmark. Chase Morrill and his crew renovate a historic shack in Bunganuc Creek. They start by opening boarded windows, clearing animal droppings and years of trash.

Beast Of Boggy Creek. Phil and Heather head to Arkansas to solve the mystery of a legendary swamp monster that has terrorised the small town of Fouke for over a century.