National Geographic Canada HD

Chris turns to longevity doctor Peter Attia to find out how changing his eating habits can help his quest for longevity. Ironically, the answer is to eat no food at all for four days, which will unlock his body's own anti-aging powers.

Can Chris stop playing it safe and rediscover the joy of taking risks?

The story of Poland's survival, against all the odds.

The story of the Netherlands' most powerful defence - water.

Whistleblower testimony reignites a decades-long fight for transparency.

Commercial pilots come forward about their encounters with UFOs.

An American arrives at customs with firearms; a traveler makes a breathtaking statement.

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

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

An old map connected to testimony from an 1891 eyewitness account of Slumach's hanging sheds light on the legend.

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

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

An American arrives at customs with firearms; a traveler makes a breathtaking statement.

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

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

An HSI stakeout leads to nearly $500,000 of meth and fentanyl in San Diego; CBP finds concealed cash and a carload of cocaine at the El Paso border.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

HSI performs an undercover drug sting; CBP finds cocaine in Rio Grande Valley.

CBP's K9 sniffs out hidden cash; HSI intercepts a $2 million drug deal.

CBP in JFK and HSI in San Diego tackle fentanyl crisis on opposite coasts.

HSI partners with Colombian National Police to dismantle illegal gold mining operations; CBP thwarts cartel activity in Texas.

HSI money laundering stings; CBP's largest drug seizure in LAX history.

The residents of Port Protection build a life-changing tool.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

The search for crab takes residents into a dangerous new environment.

The residents of Port Protection build a life-changing tool.

In this enhanced episode, AMO Puerto Rico finds cocaine on a ferry.

The search for crab takes residents into a dangerous new environment.

An HSI stakeout leads to nearly $500,000 of meth and fentanyl in San Diego; CBP finds concealed cash and a carload of cocaine at the El Paso border.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

HSI performs an undercover drug sting; CBP finds cocaine in Rio Grande Valley.

CBP's K9 sniffs out hidden cash; HSI intercepts a $2 million drug deal.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

A recurring mine marker points the team east to neighboring Harrison Lake as leads and legend line up; clues found in a 1950s article by an investigative reporter place a lost Spanish gold mine directly on Slumach's path.

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.

The fundamental creation of the wheel helps shape the human experience, but if the wheel suddenly stopped working and society lost the greatest, game-changing accomplishments made using wheel technology, the world would be vastly different.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

In this enhanced episode, the causes of three disasters are dissected.

Three real-world disasters forensically dissected -- Deepwater Horizon explosion, the Concorde crash and the funicular fire at Kaprun.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

Enhanced; three real-world disasters dissected: in space, a train and a high-rise.

Enhanced; three real-world disasters dissected: nuclear missile, ferry and oil rig.

In this enhanced episode, the causes of three disasters are dissected; Lac-Mégantic train crash, Imperial Sugar refinery explosion and Ever Given container ship accident.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

Will travels to a remote South Pacific island threatened by rising seas.

Will travels to the Kalahari Desert to learn the secrets of the San people.

Psychologist Modupe Akinola challenges Chris to stay calm during a terrifying walk along a crane that's projecting from a skyscraper. Chris learns powerful techniques to control stress in his life and combat the risk it poses to long-term health.

Will travels to a remote South Pacific island threatened by rising seas.