National Geographic (Canada)

Explore the 10 most dramatic structural collapses in history, from bridges to buildings.

When a dam fails, catastrophe follows; history's 10 worst dam failures.

Exploring various catastrophies that has happened in mankind's quest to conquer space, from the Apollo 1 tragedy to the Challenger and the Columbia disasters.

Witness the 10 worst sports crashes from the high-risk world of sport racing.

Trains, planes, and ships collide; exploring ten global collisions.

Thord Paulsen and his colleagues must fight against snow and icy winds as they rescue cars and trucks on Norway's slippery mountain roads.

Severe winter weather brings chaos to the mountains and Thord's running out of options; Bjoern does Thord a big favor, leaves his territory and takes a ferry to the coast to rescue a snowplough.

Trains, planes, and ships collide; exploring ten global collisions.

Thord Paulsen and his colleagues must fight against snow and icy winds as they rescue cars and trucks on Norway's slippery mountain roads.

Severe winter weather brings chaos to the mountains and Thord's running out of options; Bjoern does Thord a big favor, leaves his territory and takes a ferry to the coast to rescue a snowplough.

Every day our planet faces deadly threats; from earthquakes, viruses, tsunami's and extreme weather phenomenon, to threats from outer space in the form of radiation, asteroids and other space debris.

Ranking history's 10 most dramatic global disasters.

Ten of history's worst maritime disasters at sea.

Explore the 10 most dramatic structural collapses in history, from bridges to buildings.

A traveler is suspected of smuggling cocaine; an officer questions a traveler with low funds and a lengthy travel plan; a family from Canada traveling with a puppy is barking up the wrong tree.

CBP has beef with a traveler when they discover undeclared meat in his fiancé's luggage.

In Buffalo, officers search the vehicle of an American permanent resident; CBP are perplexed by a batch of ceramic pastries.

A family risks losing their stacks of cash; officers are on high alert after an American declares he is packing heat; CBP suspect a traveler is pulling a con job with his US work visa.

Adam, Kru and Tony follow the path of a failed 1982 Vancouver news team led by a Slumach gold hunter and mystic dowser.

Conservation Officer Logan has a close call while investigating a case of poaching; an aggressive grizzly bear ransacks a remote trapper's cabin.

A blast of arctic air reopens the ice roads; Steph Custance falls victim to severe icing and winds up in a ditch; truckers set out to see if the newly reopened ice crossings are really ready for their big rigs.

A traveler is suspected of smuggling cocaine; an officer questions a traveler with low funds and a lengthy travel plan; a family from Canada traveling with a puppy is barking up the wrong tree.

CBP has beef with a traveler when they discover undeclared meat in his fiancé's luggage.

In Buffalo, officers search the vehicle of an American permanent resident; CBP are perplexed by a batch of ceramic pastries.

A family risks losing their stacks of cash; officers are on high alert after an American declares he is packing heat; CBP suspect a traveler is pulling a con job with his US work visa.

Cesar rehabs an overprotective Belgian Malinois and a puppy with no leadership.

A pet parent unknowingly trains his pit bull to attack cleaning objects.

Cesar rehabs a sound sensitive sheepdog and a confused golden retriever.

Cesar helps a back-of-the-pack biter and his pet parent shed their fear.

Two dogs with bizarre obsessions.

Cesar helps three little dogs with big problems.

In this special episode, Cesar helps two dogs with aggression issues.

In this special episode, Cesar helps two dogs in life-or-death situations.

Spring rain brings new opportunities to the land of the Iberian lynx. However, the lynxes of the valley find it challenging to raise their cubs.

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

In this special episode, Cesar helps two dogs in life-or-death situations.

Spring rain brings new opportunities to the land of the Iberian lynx. However, the lynxes of the valley find it challenging to raise their cubs.

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

Cesar rehabs an overprotective Belgian Malinois and a puppy with no leadership.

A pet parent unknowingly trains his pit bull to attack cleaning objects.

Cesar rehabs a sound sensitive sheepdog and a confused golden retriever.

Cesar helps a back-of-the-pack biter and his pet parent shed their fear.

A CBP canine tracks a THC-toting traveler.

A traveler isn't blowing smoke when it comes to declaring her cigarettes.

A South American surfer's vague travel plans make waves with CBP.

A CBP canine is on the hunt for concealed contraband.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

When a bear charges a group of remote researchers, a Conservation Officer deals with the potentially life-threatening situation, and Ray takes on a challenging recovery that bested two tow companies before him.

Polar Industries must deliver an oversized load hundreds of miles north on the winter roads; owner Mark Koyhaykewych recruits Lisa Kelly, then calls in Reno Ward, the 23-year-old son of the late Darrell Ward; a blizzard adds a new layer of danger.

A CBP canine tracks a THC-toting traveler.

A traveler isn't blowing smoke when it comes to declaring her cigarettes.

A South American surfer's vague travel plans make waves with CBP.

A CBP canine is on the hunt for concealed contraband.

Just weeks before the war ends, USS Indianapolis is violently sunk; hundreds of men are lost at sea as they fight off exposure and shark attacks; it is the worst disaster at sea in U.S. Naval history.

Undersea explorers aboard the research vessel Petrel detect a wreck off the coast of the Philippines that fits the profile of an American destroyer.

Hours after emerging victorious in the first carrier-to-carrier battle of World War II, the USS Lexington erupts in flames due to enemy fire; after 80 years, Petrel hopes to spot the wreck and the planes that went down with the ship.

The Petrel team searches for the American aircraft carrier USS Hornet; the ship's life is cut short when the Hornet sails into a hornet's nest of Japanese ships.

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.

In one night, over 1000 Allied sailors perish when four cruisers go down in flames; Petrel searches for the cruisers in a graveyard littered with ships.

Rob Kraft hunts for Musashi, the biggest battleship ever built and considered to be unsinkable by the Japanese.

Research vessel Petrel picks up what they believe to be the debris trail of the USS Johnston; a manned submersible is deployed to potentially put eyes on the deepest shipwreck in the world.

Rookie CBP officers find multiple drugs; HSI runs a buy-bust operation.

All around Port Protection, neighbors lend each other helping hands.

Research vessel Petrel picks up what they believe to be the debris trail of the USS Johnston; a manned submersible is deployed to potentially put eyes on the deepest shipwreck in the world.

Rookie CBP officers find multiple drugs; HSI runs a buy-bust operation.

All around Port Protection, neighbors lend each other helping hands.

Just weeks before the war ends, USS Indianapolis is violently sunk; hundreds of men are lost at sea as they fight off exposure and shark attacks; it is the worst disaster at sea in U.S. Naval history.

Undersea explorers aboard the research vessel Petrel detect a wreck off the coast of the Philippines that fits the profile of an American destroyer.

Hours after emerging victorious in the first carrier-to-carrier battle of World War II, the USS Lexington erupts in flames due to enemy fire; after 80 years, Petrel hopes to spot the wreck and the planes that went down with the ship.

The Petrel team searches for the American aircraft carrier USS Hornet; the ship's life is cut short when the Hornet sails into a hornet's nest of Japanese ships.

A small convoy heads out with an oversized load; Lisa Kelly and Reno Ward's skills are tested by the treacherous journey; Art Burke attempts to navigate an ice road over a frozen lake; Alex Debogorski stops to help a stranded trucker.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

Planning a surprise visit to a married man could cause one traveler to be left at the airport; shocked by an undeclared stun gun, CBP race against time to find the owner before the plane boards.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

The docs lean on their vet techs to save a beloved sick chicken, help a giant schnauzer, and acclimate some wild bass to a new home.

The docs see a goat with severe bloating, a boa constrictor that refuses to feed, and a turtle infected with parasitic "vampire worms.".

The Docs at Critter Fixer treat a rescued pigeon with a surprising injury.

The Docs at Critter Fixer attempt to remove an egg from a cockatiel.

The docs at Critter Fixer attempt to MacGyver a turtle's broken shell.

The Docs at Critter Fixer provide inspiration to animals and humans alike.

The docs get up close and personal with venomous snakes, help a dog whose face droops, and send a diabetic canine on the road to recovery.

The docs at Critter Fixer remove record-breaking kidney stones from a dog.

The docs at Critter Fixer embark on their new "Vet for a Day" national tour.

With extra scenes; the docs work to keep the clinic clean while meeting an adventurous cockatiel, an eager beaver and a cow that takes them surfing.

The docs at Critter Fixer operate on an eel and perform a snake C-section.

The Docs are awarded keys to the city for years of community service; helping a red tail boa; introducing a kid to a kid.

The docs at Critter Fixer help 15 celebrity chihuahuas and a baby duckling.

The docs at Critter Fixer operate on an eel and perform a snake C-section.

The Docs are awarded keys to the city for years of community service; helping a red tail boa; introducing a kid to a kid.