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New research suggests that the sacred sites of the ancient Maya in Mexico and Guatemala were linked to underground cave systems.

Archaeologists investigate why Egyptians abandoned the pyramids and expose an ancient tomb.

Shedding light on German U-Boats, the world's first stealth weapons.

En route from Bogota to the tiny Caribbean island of San Andres, Aires Flight 8250 is rocked by a tropical storm. Though the crew expects to emerge from the intense weather, they are pummelled by high winds and heavy rain on their final approach.

En route to Comodora, SOL Airlines Flight 5428 nosedives into a remote desert, instantly killing everyone on board. Argentinian investigators scour the scattered and scorched debris and find nothing out of the ordinary. That is, until a microscopic filament provides the first tangible clue.

With the best boat and an expert crew, the odds seemed stacked in Captain Dave Carraro's favour. However, he had better watch out as the others look to try and take him down a notch.

The boys head to France to pick up 94-year-old war hero Roger's 1968 Citroen. This iconic car is in need of some serious work. Can Tim and Fuzz work their magic?

Tim and Fuzz hope to put a smile back on Adam's face by getting his 1984 Toyota FJ40 Land Cruiser back on the road.

It's the most popular construction toy in the world. Children all over the world spend over five billion hours a year playing with Lego bricks.

A look at how some foods are made in food factories including fat-free Greek yogurt, butter cream, and Swiss roll cakes.

A look at how some foods are made in food factories including cabbage rolls, sweet and salty popcorn, and potato skins chips.

Chad Zdenek joins a team responsible for stripping down and rebuilding the biggest aircraft in the U.S. Air Force's arsenal, the Lockheed C5 Super Transporter; Chad sees how engineering overcame the design flaws that once grounded the C5 fleet.

A fraught look at how 19 tourists fell to their deaths at an Italian ski resort in 1998 when a military plane accidentally cut a cable supporting their gondola.

Experience the story of the airmen that seismically shifted the Allies fortunes during World War II, known as the Mighty Eighth Airforce. Featuring never before seen archival footage.

As early as 1920, Munchener Post journalists saw the danger posed by Hitler. Unwaveringly and fearlessly, they wrote about National Socialism.

Investigators face puzzling questions when a Boeing 767 crashes into the hillside several miles from South Korea's Gimhae International airport.

Previously unseen footage reveals some of the most significant moments of WWII as fighting reached a bloody climax and the US prepared to drop the atomic bomb.

Considering the line of succession in North Korea, whose leadership has been in the hands of one family for over 70 years, claiming a divine right to rule.

A hash trafficker gets busted in Tokyo when he breaks his own golden rule. Plus an Irish plumber makes a terrible decision. While desperate to keep himself and his family out of trouble, he agrees to smuggle cocaine for cash.

From the ice epidemic in Australia to cocaine dealers in London, explore the multi-billion-dollar industry that fuels crime and violence like no other substance on the planet.

It's June 1940 and the Nazis have taken the Channel Islands, where Hitler orders some of the most fortified structures in the Third Reich.