National Geographic HD

When a truck crashes into a snowbank in the mountains, Thord and rookie Terje must put their lives at risk to save its valuable cargo.

At the onset of winter, Alaskans combat threats; a storm batters Kavik as Sue fortifies camp; Ricko searches for elusive wildlife; the Hailstones ice fish; Johnny secures food in the Brooks Range.

The winter season grows more erratic, and Alaskans are forced to adapt.

As the deep cold persists, Alaskans must carry on their way of life.

As daylight fades, Alaskans contend with threats lurking in the shadows.

Meet the new Shark PowerDetect Upright Vacuum with features like DuoClean Detect Technology, self-cleaning brush roll and odor neutralizing and you will be cleaning faster, smarter and better!

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!

Meet the new Shark PowerDetect Upright Vacuum with features like DuoClean Detect Technology, self-cleaning brush roll and odor neutralizing and you will be cleaning faster, smarter and better!

Meet the new Shark PowerDetect Upright Vacuum with features like DuoClean Detect Technology, self-cleaning brush roll and odor neutralizing and you will be cleaning faster, smarter and better!

Jacuzzi Bath Remodel and interior designer Christina Haack shares how to transform your bathroom into a gorgeous, safe, stylish space in as little as one day.

Learn about the variety of Humana Medicare plans designed to fit people's needs, lifestyle, and budget.

The clear and present danger of meth, crack and heroin on the streets of San Francisco; enhanced.

The facts behind the illegal drug trade, from Mexican cartel trafficking to the tourist industry in Las Vegas; enhanced.

Cocaine and marijuana dominate a drug-fueled, 24-hour lifestyle for Londoners, who work hard and play even harder; enhanced.

Baltimore is the heroin capital of the United States; everyone on the street is grinding for dope money; now, the hustle mind set is spreading to the suburbs; enhanced.

Drug dealers use extreme violence on the streets of Oakland, Calif., while elite undercover detectives aim to bring them down.

HSI busts date-rape drug traffickers; CBP stops a car filled with cocaine.

CBP and HSI work together to take down traffickers of coke and marijuana.

CBP seizes fentanyl, coke and heroin; HSI Miami intercepts outbound guns.

CBP seizes suitcases of drugs bound for the UK and looted ancient statues.

CBP El Paso uncovers a massive meth load in a railcar; HSI Miami investigates a counterfeit passport ring, with a son implicating his own mother.

AMO Puerto Rico finds cocaine on a ferry; CBP stops travelers with opioids.

HSI busts meth smugglers in San Diego; CBP intercepts drug body carriers.

AMO chases a boat tossing cocaine overboard. CBP seizes pills from a pilot.

A young CIA officer is kidnapped abroad, triggering a tense 24-hour standoff.

HSI finds illegal guns in Miami; CBP in Texas seizes meth worth millions.

AMO chases a boat tossing cocaine overboard. CBP seizes pills from a pilot.