Nat Geo HD

More than 100 people died when a German InterCity Express train travelling at 125 mph crashed into a bridge in 1988. How did the disaster happen? 7+.

Careening into a mountaintop just minutes from the runway, an American charter flight becomes the worst aviation disaster in Portuguese history. (S22, ep 2) 7+.

Wounded in the fight to break out from Normandy, Captain Matt Urban defies the odds and leads a daring charge against German forces.

As Hitler sets his sights east, waves of German bombers obliterate the Soviet city of Stalingrad. (S3, 4 of.

World War Two left a great number of ships and submarines hidden beneath the waves. If the oceans were drained, what secrets would each vessel reveal? 7+.

A look at the fate of Korean Air Cargo flight 8509. 4 died in the explosion near Stansted Airport, making it the airline's fifth accident in two-and-a-half years. 7+.

In San Juan the passengers try to smuggle elicit medication. (S1, ep 7) 7+.

Johnny searches for small game, Chris and Jessi's livelihood is threatened, Sonta and Sydney try to harvest a moose and the Millers go otter trapping.

The King's Evil, the Leper Skull, Ancient Cancer Treatment: Ancient clues reveal how rulers, healers and early societies confronted disease. (S1, ep 10) 18+.

Sean estimates the value of a derringer pistol. Meanwhile, Shooter checks out a Captain America comic book that a fan went to great lengths to acquire. 7+.

Wedding Cake & Roast Beef Wraps: As a baking crew struggles with a last-minute wedding cake order, a catering team races to feed hundreds of athletes. (S5, ep 23) 7+.

Dogfish & Beets N' Corn: While a crew of fisherman tackle a mega order from Harvard University, two farmers scour their fields for super fresh veggies. (S5, ep 24) 7+.

Mali is home to a rare tribe of elephants. They are one of just two herds of desert-dwelling elephants in the world. But they are struggling to survive. (S1, ep 7) 7+.

Who says you need wings to fly? The best action is up high in Borneo's rainforest, where some animals go their whole lives without touching the ground. (S1, ep 8) 7+.

Your one-stop-shop for all things cruise; bringing you the hottest destinations, ground-breaking ships and the latest deals to ensure your next cruise is your greatest one.

Clues point to a mechanical problem when a Continental Airlines flight crashes. But then, investigators find the true culprit in the Rocky Mountains.

A series of discoveries spark calls to transform Russia's entire aviation system when an Aeroflot Nord flight crashed onto the Trans-Siberian railway.

Three Mile Island, Mont Blanc Tunnel, Sampoong Mall: How did a nuclear reactor at Three Mile Island melt down? And how did a small truck fire become a lethal inferno? 7+. (3 of.

Tim and Fuzz secretly fix up Italian car nut Gary's rusty World rally champ.But when tragedy strikes, the job takes on a very different meaning. 7+.

Lightning has struck an incoming flight. As engineers assess the damage, high winds lead to runway closures and another plane starts leaking a potentially dangerous liquid. 7+.

Who's At The Controls? The pilots of an Eastern Airlines flight became concerned that their landing gear was not locked for landing. Did this distraction cause the plane to crash? 7+.

In a bid to support the Battle of the Bulge, Himmler launches a surprise offensive into France against nearly arrived, green US troops.

Unravel the mysteries behind the Bermuda Triangle in this one-off documentary, which, for the first time, gets to the bottom of what lies beneath the sinister stretch of water. 7+.

The Wicked Duke: Dan Snow and Suzannah Lipscomb trace John Dudley's rise to power and his pivotal role in Lady Jane Grey's brief reign.

Thord and Bjoern are tested to the limits when they have to rescue a truck from falling into a lake. 7+.

An express train was derailed and 47 passengers killed after an Alabama towboat captain unknowingly bumped a rail bridge in thick fog. 7+.

When a turboprop crashes in Papua New Guinea, investigators uncover a deadly flaw in an aircraft used all around the world. (S22, ep 4) 7+.

Previously unseen footage reveals how, as Nazi soldiers enjoy rest and recreation in Paris, Jews and Polish prisoners are forced into slave labour.

Wounded in the fight to break out from Normandy, Captain Matt Urban defies the odds and leads a daring charge against German forces.

Hitler's megalomania led him to construct the ultimate deep-sea destroyer, the largest tank the world has ever seen and a fighter jet that inspired a revolution in aerial warfare. 7+.

In 1978, 146 passengers died when a PSA flight crashed into a Cessna. Who was responsible for the deadly crash that also killed seven people on the ground? 7+.