Hadrian’s Wall is the biggest structure the Romans ever built. Stretching 73 miles across Britain, it once defined the...
CBP hunts for drug runners off the coast and in the jungles of Puerto Rico, while CBP Laredo seizes 130 lbs of marijuana...
HSI San Diego chases down a truckload of meth buried in garlic. CBP hunts for party drugs in toiletries at ATL and counterfeit...
San Diego HSI seizes a medley of narcotics hidden in a car, CBP processes ferry travelers in Puerto Rico, and officers at JFK...
CBP confronts human smuggling at the San Ysidro border crossing, while HSI nabs a car loaded with 6 kilos of fentanyl pills...
Mariana van Zeller goes inside the secretive world of outlaw motorcycle gangs, also known as 1% clubs, when her interest is...
Alaska, Canada, Norway, and the Arctic are some of the coldest and most remote areas on earth. The animals that call these...
Few countries in South America boast have such contrast and variety. Diverse habitats such as Patagonia's bleak steppe,...
Narrated by Hollywood A-Lister actress Angela Bassett and produced by the Emmy-Award-winning producers of Planet Earth II,...
Our unique story spans a decade and follows one of Tanzania’s most powerful lion prides as they overcome mounting obstacles...
National Geographic Explorer, Albert Lin uses high-tech digital equipment to reveal never before seen archeological and...
This spectacular aerial journey reveals Iceland as it’s never been seen before. Drone cameras follow archaeologists battling...
This spectacular aerial journey reveals Ireland as it’s never been seen before. Flying cameras uncover the technology buried...
The Arctic Circle, Northern Alaska. Its minus 35 degrees, inhospitable, literally crawling with bears. A team of adventurous...
Engineers push the boundaries of innovation leading humanity towards our greatest achievements. Their failures are Icarus-like...
World Animal Day on October 4th each year focuses on improving the welfare of animals around the world.
National Geographic Explorer, Albert Lin uses high-tech digital equipment to map ancient civilizations revealing never before...
At Rome’s Fiumicino Airport, security personnel work around the clock to keep Italy’s busiest airport free of criminal...
As much as 30% of our seafood has been caught illegally. Mariana searches for the fish pirates who make billions each year...
Mariana travels to the Amazon to track down the criminal networks behind a slew of killings and the illegal destruction of the...