National Geographic HD (Pacific)

The mighty Inca Empire collapsed in less than a decade to Spanish conquistadors.

A cemetery crammed with skeletons offers tantalizing clues about the collapse of the Inca Empire.

Jo Roger gets unexpected help on a big mission; Thord risks crushing a snow-covered car when rescuing a tanker from a tight spot.

Sculpted by the elements, Grand Canyon National Park is a high-rise haven and a natural wonder; at every elevation, the park's wild inhabitants carve out a niche that gives them an edge.

Yosemite National Park rises from lush valley floors to soaring alpine peaks, with more than 400 animal species trying to survive in the California oasis.

Big Bend National Park is a vast wilderness of mountains, deserts and rivers deep in the heart of Texas, with more species of birds, insects and cacti than any other park in the United States.

A look at Lake Clark, a hidden gem where animals and people coexist in harmony.

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Join your hosts Kevin Cash & Cory Cady as we discuss the 250th Anniversary of America with the official "America 250" logo on a Silver American Eagle label; we are locking in orders for this iconic release, but coins are limited! Don't miss out!

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See how one company is changing people's lives by helping them put their tax problems to rest.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

Officers uncover a smuggling effort at the mail center; two passengers from Taiwan are caught lying and packages of undeclared kava raise officers' suspicions.

A woman brings contents of her fridge with her; a suspicious clock at the mail centre has officers worried; a man returning from Cambodia raises alarms.

Strong tea, a red-flagged man and smuggled goods.

A popular woman draws the wrong kind of attention.

A missing passenger and matching packages cause alarm.

Officers bust a major smuggling attempt that unfolds in Brisbane.

A woman's texts spark a major investigation in Perth.

A mystery at Melbourne Airport has everyone on edge.

A man of mystery has officers on high alert; a situation arises at the Container Examination Facility; a man tries to smuggle goods into the country.

Officers find disturbing information on a Russian woman's phone; a family is caught red-handed by Border Force; officers make an alarming discovery.

An angry passenger and a million-dollar bust collide in Perth.

A routine check at Sydney Airport suddenly turns chaotic.

An Uber driver tries to smuggle prohibited goods; a suspicious shipment of football gear piques officers' interest; an unusual snack alarms officers.

A traveler has romance on his mind but may be hiding something from the Border Force officers; a passenger arriving from Africa is caught with high-risk items.

A disturbing discovery at the mail center has Biosecurity on high alert; officers interrogate a couple whose stories aren't stacking up; a couple is caught importing dangerous goods.

A girl's online romance sets off serious red flags at the airport; a shipment of lollies is not what it seems.

Police stop a suspected drug smuggler traveling with her child; officers find a new way to hide cocaine.

The agents identify two suspicious travelers going to Mexico; the body scan shows they are carrying capsules inside their bodies; in the hospital, one of them reveals that they are pregnant.

In the Jorge Chávez Airport, anything can happen: passengers try to transport illicit substances in their luggage or in their bodies, parcels with drugs hidden in their structures or impregnated in fabrics, and even innocent-looking old women.

At Jorge Chávez Airport in Lima, Peru, agents hold a Spanish passenger when they discover that their suitcases conceal almost 10 kilos of cocaine.

Police officers handle a woman trying to smuggle cocaine inside her body; a passenger tries to intimidate police agents.