Spring hits remote Alaska and the rush to adapt to change has arrived.

Alaskans must use sweat equity to harvest and preserve their bounty.

Alaskans must harness nature's resources in order to survive in the Arctic.

No matter the season, danger lurks in Alaska's backcountry.

Trouble looms for a young Asian woman carrying someone else's bag, and a pair of Canadians return from a concert in California with more than a T-shirt.

A street performer is caught in the middle of an escape act; a cheeky bus passenger answers questions about his mischievous past.

A distinctive bag has officers seeing double; a photographer misses the big picture; a heavily-modified truck causes concern.

A traveler's textbooks teach him an unexpected lesson; a tourist hits a snag instead of the slopes; officers inspect a shipment of cosmetics.

Examining the history of cats and dogs and how they have been helpful companions to humankind all over the globe.

Stressed, Chris and Nika butt heads; Cam faces machine failures and contaminated fuel; Ken and Guillaume find traces of gold.

With the biggest storm in centuries only a few days away, the truckers race for loads; Art and Todd set out to prove themselves.

Trouble looms for a young Asian woman carrying someone else's bag, and a pair of Canadians return from a concert in California with more than a T-shirt.

A street performer is caught in the middle of an escape act; a cheeky bus passenger answers questions about his mischievous past.

A distinctive bag has officers seeing double; a photographer misses the big picture; a heavily-modified truck causes concern.

A traveler's textbooks teach him an unexpected lesson; a tourist hits a snag instead of the slopes; officers inspect a shipment of cosmetics.

Dr. Pol examines a goat that has been refusing to eat.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

The vets tackle a twisted calving, a flock of ducks and a pack of rats.

Pets in a jam with quills, fishhooks, and string go to PVS to get unstuck.

There's no time to rest with emergency calvings, rowdy pups, and ailing felines.

A new Pol family member is born.

Phil Breslin heads along the rugged cliffs and sandy flats of the coast to find a sea eagle, an estuarine stonefish, and a stingray.

Phil Breslin ventures into Australia's notorious swamp country where he encounters the speedy freshwater crocodile, the predatory barramundi and the world's largest reptile, the saltwater crocodile.

Examine some of the most unsuspecting con artists of the animal kingdom as they showcase their skills.

A blocked bearded dragon; a feisty cow to dodge; a surprise for Tater.

A puppy tornado touches down at PVS; a cute kitten is rescued.

Phil Breslin heads along the rugged cliffs and sandy flats of the coast to find a sea eagle, an estuarine stonefish, and a stingray.

Phil Breslin ventures into Australia's notorious swamp country where he encounters the speedy freshwater crocodile, the predatory barramundi and the world's largest reptile, the saltwater crocodile.

A blocked bearded dragon; a feisty cow to dodge; a surprise for Tater.

Dr. Pol examines a goat that has been refusing to eat.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

The vets tackle a twisted calving, a flock of ducks and a pack of rats.

Officers add charges to a woman's lengthy rap sheet and stumble upon a hair-raising package from Malaysia.

Officers are stumped by a backpacker carrying photos of his criminal activities; an American band gets caught in a jam.

Staff confront an American soldier running scared; a British woman causes confusion with her bag of tricks.

Hidden compartments in a traveler's backpack raise red flags; the discovery of a deadly weapon leaves mail center workers stunned.

Massive and sophisticated contributions from Korea have shaped our modern world, from ancient advances like the greenhouse and armoured boats to modern screen technology, online gaming, E-sports and K-Pop.

Cam hits permafrost, forcing him to shut down the plant; Ken and Guillaume abandon Arizona Creek; Karl gambles with broken equipment.

The truckers race to deliver their loads while a massive storm approaches; Lisa and Art face a deadly shutdown; Darrell and Todd's feud threatens to rip team Polar apart.

Officers add charges to a woman's lengthy rap sheet and stumble upon a hair-raising package from Malaysia.

Officers are stumped by a backpacker carrying photos of his criminal activities; an American band gets caught in a jam.

Staff confront an American soldier running scared; a British woman causes confusion with her bag of tricks.

Hidden compartments in a traveler's backpack raise red flags; the discovery of a deadly weapon leaves mail center workers stunned.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover the dark side of the idyllic Roman city by finding the room of an enslaved person.

Archaeologists reveal the discovery of a Nero megastructure.

Discoveries uncover how the Romans ruled the seas for four centuries.

Archaeologists excavate a buried city in Jordan, dive a sunken temple in Italy and explore Petra to shed new light on how Rome conquered the east.

Archaeologists excavate the vast frontier of the Roman Empire, investigating the battle to keep it safe.

How the giant ice age mammoth became extinct.

Taking a look at the excavations in the La Brea Tar Pits in Los Angeles and showcasing how the pits can help unravel the mystery of how the saber-toothed tiger hunted its prey.

CBP finds 100 kilos of coke in a banana shipment bound for a Philly bodega.

How the giant megalodon shark took over the oceans.

Taking a look at the excavations in the La Brea Tar Pits in Los Angeles and showcasing how the pits can help unravel the mystery of how the saber-toothed tiger hunted its prey.

CBP finds 100 kilos of coke in a banana shipment bound for a Philly bodega.

How the giant megalodon shark took over the oceans.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover the dark side of the idyllic Roman city by finding the room of an enslaved person.

Archaeologists reveal the discovery of a Nero megastructure.

Discoveries uncover how the Romans ruled the seas for four centuries.

A storm delivers deadly driving conditions as the truckers struggle to deliver their loads.

Mexico's gifts to the world include the tomato, the avocado, tacos, tequila, Frida Kahlo, Oscar-winning directors, Mexican wrestling, Latino pop music, silver, rubber, and Mayan astronomy.

Paid programming.

An irritated traveler pushes officers to the limit; Haitian fruits may contain more than vitamins.

Mexico's gifts to the world include the tomato, the avocado, tacos, tequila, Frida Kahlo, Oscar-winning directors, Mexican wrestling, Latino pop music, silver, rubber, and Mayan astronomy.

The vets at Dr. K's are getting served lots of tricks during their treatments.

A variety of exotic and chaotic patients come in to the clinic.

Animal moms in need from reptiles to bunnies get a little help at Dr. K's.

Animals having an unlucky very bad day are lucky to find Dr. K's clinic.

At Dr. K's, shelled and scaly pets are just as loved as the furry ones; a large tegu lizard has trouble pooping; a pregnant pine snake may need a cesarean section; a sulcata tortoise bleeds after getting hit by a car.

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

Dr. Oakley performs a checkup on two scrappy lynx, and Sierra takes charge on clinic day.

Back in the Yukon, the Oakleys help over 100 cattle and a rowdy mini mule.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

Dr. Oakley performs a checkup on two scrappy lynx, and Sierra takes charge on clinic day.

Back in the Yukon, the Oakleys help over 100 cattle and a rowdy mini mule.

The vets at Dr. K's are getting served lots of tricks during their treatments.

A variety of exotic and chaotic patients come in to the clinic.

Animal moms in need from reptiles to bunnies get a little help at Dr. K's.

Animals having an unlucky very bad day are lucky to find Dr. K's clinic.

Darrell and Todd try to get through record breaking snowfall, while the rest of the team fights to survive; despite frigid temperatures the war between VP Express and Polar reaches a boiling point.

From early exploration to cutting-edge technologies, Sweden has helped define the modern world through innovations from Viking ship design, IT, dynamite, Nobel prizes, and the music of ABBA.

Darrell and Todd try to get through record breaking snowfall, while the rest of the team fights to survive; despite frigid temperatures the war between VP Express and Polar reaches a boiling point.

From early exploration to cutting-edge technologies, Sweden has helped define the modern world through innovations from Viking ship design, IT, dynamite, Nobel prizes, and the music of ABBA.

Dutch inventions and innovators have changed the world, from artists like Rembrandt and Van Gogh to Anne Frank, the first stock exchange, telescopes, submarines, windmills, flowers and gin.

Thord and Bjoern take on a marathon, 16-hour rescue, to stop an unstable truck falling off a steep gradient with a large lake below; it involves the men putting themselves in danger.

In the south of Norway, Thord, Bjoern and their army of men are forced to go out into one of the country's worst storms in ten years; they need to rescue a truck loaded with steel girders.

Bjoern is under pressure when a head-on collision between two trucks blocks an ambulance on an emergency call-out; Thord works through the night to rescue a driver trapped in his jack-knifed truck.

Thord and Bjoern face the ultimate rescue challenge when a fully loaded truck crashes 40 meters down a mountainside and is destroyed.

Bjoern finds himself in a tough situation when a double accident forces him to ask his rivals for help; Thord tries to rescue a 14-ton tractor.

In the north, Jo Roger's rookies are put to the test by rescuing three vehicles that have tumbled off the road; the tow truck sinks into a deep ditch.

When a massive supermarket truck crashes, Jo Roger enlists his old friend and former employee, Roger, to make a comeback.

Thord and Bjoern find themselves between a rock and a hard place when the police stop them halfway through the rescue of a 35-ton truck; in the north, Jo Roger tries to rescue a truck loaded with ten tons of salmon.

Racing to a rescue, rookie Terje runs into trouble when he crashes Thord's tow-truck; Thord risks it all to rescue a garbage truck.

Experts are the first to venture inside the heart of an unexplored pyramid.

Gary Mehigan explores different parts of Delhi and Hyderabad during Eid-Ul-Fitr, where Muslims celebrate the end of Ramadan with delicacies.

Predators and prey in India's deserts battle each other and the harshest of landscapes for food, water and breeding rights.

Experts are the first to venture inside the heart of an unexplored pyramid.

Gary Mehigan explores different parts of Delhi and Hyderabad during Eid-Ul-Fitr, where Muslims celebrate the end of Ramadan with delicacies.

Seen through the eyes of a newborn elephant calf, follow life among India's giant herbivores in the shadow of the Himalayas.

Thord and Bjoern take on a marathon, 16-hour rescue, to stop an unstable truck falling off a steep gradient with a large lake below; it involves the men putting themselves in danger.

In the south of Norway, Thord, Bjoern and their army of men are forced to go out into one of the country's worst storms in ten years; they need to rescue a truck loaded with steel girders.

Bjoern is under pressure when a head-on collision between two trucks blocks an ambulance on an emergency call-out; Thord works through the night to rescue a driver trapped in his jack-knifed truck.

Thord and Bjoern face the ultimate rescue challenge when a fully loaded truck crashes 40 meters down a mountainside and is destroyed.

Officers look for a message in a bottle; a lack of papers land a group of LA rappers in the doghouse; a young man receives a wake-up call.

An accidental detour leads two Canadians to a dead-end; an ornate frame holds more than just a picture; a man is suspected of money laundering.

An American traveler has trouble recalling his hazy past; bad decisions may keep a rugby player off the pitch; a bag is found in a restricted area.

A traveler's belongings raise repeated alarms; a man's reasons for studying in Canada may not be academic; an American couple make the move to Alaska.

The truckers battle a massive storm.

Frigid temperatures wreak havoc on Dawson City, putting the fire department in danger; an avalanche shuts down the Klondike Highway and a tow operator races to find a driver who has plunged off-road and into an icy river.

Massive and sophisticated contributions from Korea have shaped our modern world, from ancient advances like the greenhouse and armoured boats to modern screen technology, online gaming, E-sports and K-Pop.

Officers look for a message in a bottle; a lack of papers land a group of LA rappers in the doghouse; a young man receives a wake-up call.

An accidental detour leads two Canadians to a dead-end; an ornate frame holds more than just a picture; a man is suspected of money laundering.

An American traveler has trouble recalling his hazy past; bad decisions may keep a rugby player off the pitch; a bag is found in a restricted area.

A traveler's belongings raise repeated alarms; a man's reasons for studying in Canada may not be academic; an American couple make the move to Alaska.

Squibb and Troy repair a sinking float that could cause a massive oil spill.

As the community of Port Protection springs forward, Squibb and Troy join forces to repair a sinking float that could cause a massive oil spill.

Sam's youngest son returns, as Veronica learns the basics.

Novice Veronica Arrants risks life and limb to repair the town phone line.

Carl and Morgan attempt to move a thousand-pound sawmill to their property.

Veronica faces a great fear; Sam and Squibb put a web to water.

Sam helps Matt fix up an aging vessel to prepare for fishing season.

HSI surprises coke smugglers mid-handoff; CBP finds cash and ketamine.

The Search and Rescue team assists a boy who may have broken his back.

The Coastguard and other security teams battle enemies on all fronts.

HSI surprises coke smugglers mid-handoff; CBP finds cash and ketamine.

The Search and Rescue team assists a boy who may have broken his back.

The Coastguard and other security teams battle enemies on all fronts.

Squibb and Troy repair a sinking float that could cause a massive oil spill.

As the community of Port Protection springs forward, Squibb and Troy join forces to repair a sinking float that could cause a massive oil spill.

Sam's youngest son returns, as Veronica learns the basics.

Novice Veronica Arrants risks life and limb to repair the town phone line.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

Hugh has a plan to crush the competition; Todd and Lisa are pressured to up their game.

Multiple 911 calls push Dawson City to the brink as they battle to save a family home and a historic building, while snowstorms pummel Whitehorse, causing chaos and forcing a dangerous backcountry helicopter rescue mission.

Mexico's gifts to the world include the tomato, the avocado, tacos, tequila, Frida Kahlo, Oscar-winning directors, Mexican wrestling, Latino pop music, silver, rubber, and Mayan astronomy.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

Mariana van Zeller investigates one of the darkest and most elusive black markets in the world, the illicit trade in human organs.

LSD is booming because of the growing faith in its healing power; Mariana hunts for the elusive chemists responsible for making the world's supply.

Mariana exposes the dangers of the growing and deadly ghost guns industry.

Mariana is on a mission to understand how personal and financial data is stolen and sold by a shadowy network of hackers and thieves.

Enhanced: Mariana follows the booming MDMA supply chain.

Violent crime is soaring in Los Angeles to levels not seen in 30 years; Mariana journeys into gangland to understand the violence plaguing LA.

Mariana embarks on a journey from Africa to the Middle East to investigate how black-market oil is fueling terrorist groups worldwide.

Mariana embeds with a crew of crypto scammers who show her how they make millions of dollars in mere weeks.

Mariana investigates the explosive world of armored car heists.

DNA detectives attempt to identify a man crushed under ice in a rail-car.

Mariana embeds with a crew of crypto scammers who show her how they make millions of dollars in mere weeks.

Mariana investigates the explosive world of armored car heists.

DNA detectives attempt to identify a man crushed under ice in a rail-car.

Mariana van Zeller investigates one of the darkest and most elusive black markets in the world, the illicit trade in human organs.

LSD is booming because of the growing faith in its healing power; Mariana hunts for the elusive chemists responsible for making the world's supply.

Mariana exposes the dangers of the growing and deadly ghost guns industry.

Mariana is on a mission to understand how personal and financial data is stolen and sold by a shadowy network of hackers and thieves.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

With temperatures on the rise, conditions on the ice roads result in meltdown. The truckers from Polar and VP Express are pushed to the limit, crossing thin ice on their way to deliver critical loads.

As winter tightens its icy grip, the small, isolated community of West Dawson finds itself completely cut off from emergency services. Alone, Ray faces a string of dangerous solo vehicle retrieval missions on a storm-battered highway.

From early exploration to cutting-edge technologies, Sweden has helped define the modern world through innovations from Viking ship design, IT, dynamite, Nobel prizes, and the music of ABBA.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

Sometimes being a little crazy helps to overcome challenges.

Arctic survival forces adaptation on the lives of Alaskans.

Deep winter has Alaskans desperately seeking resources to survive.

Up against countless obstacles, rural Alaskans must work hard to survive.

Alaskans must overcome life-threatening obstacles to endure dark winter.

Arctic survival breeds ingenuity in the lives of Alaskans.

Determination, dedication, and grit.

Alaska natives rely on the land as source of life in this enhanced episode.

Tim Shaw and Fuzz Townshend undertake dramatic automobile interventions across the U.K.

What happened aboard the USS Juneau; five brothers are lost, but not all perish when the ship goes down; at least one brother is among scores of men stranded at sea for eight days.

Alaska natives rely on the land as source of life in this enhanced episode.

Tim Shaw and Fuzz Townshend undertake dramatic automobile interventions across the U.K.

What happened aboard the USS Juneau; five brothers are lost, but not all perish when the ship goes down; at least one brother is among scores of men stranded at sea for eight days.

Sometimes being a little crazy helps to overcome challenges.

Arctic survival forces adaptation on the lives of Alaskans.

Deep winter has Alaskans desperately seeking resources to survive.

Up against countless obstacles, rural Alaskans must work hard to survive.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

Lisa and Todd take on one of the toughest runs of the season; Darrell steals business from his former boss; Alex's trucking season is threatened by a crash.

The Dawson City Fire Department struggles in the absence of their chief; Ray is stuck in deep snow on a remote backroad and Colin races against an incoming storm to keep the travelling public safe.

Dutch inventions and innovators have changed the world, from artists like Rembrandt and Van Gogh to Anne Frank, the first stock exchange, telescopes, submarines, windmills, flowers and gin.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

Dr. Pol and Diane celebrate a milestone that's been decades in the making.

Dr. Pol celebrates turning 80 with a trip to the Netherlands with Diane.

The Pols welcome a fluffy addition to the family; Tater is not pleased.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

Charles is worried about his dog Athena and looks to his dad for guidance.

From the North Pole to Dr. Pol, everyone is getting in the Christmas spirit.

The staffers become the clients when several of their pets fall ill.

Phil Breslin heads into the mangroves to track down a mud crab and a shovelnose ray while getting attacked by a swarm of mosquitoes.

Phil Breslin heads along the rugged cliffs and sandy flats of the coast to find a sea eagle, an estuarine stonefish, and a stingray.

Ryan reveals how underdogs use gross-out tactics to win the game of life.

The clinic works together to create an extra special surprise for Diane.

The Pols need to fix the sheep hut before winter arrives.

Phil Breslin heads into the mangroves to track down a mud crab and a shovelnose ray while getting attacked by a swarm of mosquitoes.

Phil Breslin heads along the rugged cliffs and sandy flats of the coast to find a sea eagle, an estuarine stonefish, and a stingray.

The clinic works together to create an extra special surprise for Diane.

Dr. Pol and Diane celebrate a milestone that's been decades in the making.

Dr. Pol celebrates turning 80 with a trip to the Netherlands with Diane.

The Pols welcome a fluffy addition to the family; Tater is not pleased.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

Darrell's calls in a surprising reinforcement; but can this new team member hack the treacherous ice roads; Hugh has a brush with near disaster.

The Yukon's Civil Air Search and Rescue Association battles flying conditions in their search for a historic missing plane that had 44 people on board; the Dawson City Fire Department responds to a 911 call that puts the town in jeopardy.

Gold, the shiny precious metal that has been cherished through all recorded time, is vital to the modern world; if gold was suddenly stripped away, the technological and cultural world would be left reeling.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

Hunting Egypt's lost treasures in the Valley of the Kings.

Hunting Egypt's lost treasures in the Valley of the Kings.

Archaeologists investigate Egypt s most famous female pharaoh, Cleopatra.

Archaeologists unearth new evidence of how the iconic pyramids evolved.

Archaeologists investigate the suspicious death of Tutankhamun.

Archaeologists investigate how the river Nile transformed ancient Egypt.

Archaeologists investigate Egypt's famous warrior king, Alexander the Great.

Hunting Egypt's lost treasures in the Valley of the Kings.

CBP detains a man suspected of swallowing drugs; AMO agents find $51 million of coke.

Tim Curly Leech finally fixes a ticking time bomb on his property.

Hunting Egypt's lost treasures in the Valley of the Kings.

CBP detains a man suspected of swallowing drugs; AMO agents find $51 million of coke.

Tim Curly Leech finally fixes a ticking time bomb on his property.

Hunting Egypt's lost treasures in the Valley of the Kings.

Hunting Egypt's lost treasures in the Valley of the Kings.

Archaeologists investigate Egypt s most famous female pharaoh, Cleopatra.

Archaeologists unearth new evidence of how the iconic pyramids evolved.

Darrell continues to teach Reno how to drive the ice roads; bad wiring could sink Alex's cement load; Lisa and Todd run into a a road block.

Glass brought light into homes and put the world into focus; people use glass to protect ourselves, cure disease, and create artistic masterpieces.

Paid programming.

An angry businessman hides the real reason for his hostility; officers try to process some unusual Mexican migrants.

Glass brought light into homes and put the world into focus; people use glass to protect ourselves, cure disease, and create artistic masterpieces.

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

Dr. Oakley performs a checkup on two scrappy lynx, and Sierra takes charge on clinic day.

Back in the Yukon, the Oakleys help over 100 cattle and a rowdy mini mule.

Dr. Oakley treats a kitten with a bulging eye, and Sierra preg checks a miniature cow.

Dr. Oakley treats a beagle mix with a severely infected paw and rappels to an eagle's nest.