Nat Geo HD

Humanitarian crises intensify under the cover of darkness - but the discovery of an explosive in the port is anything but routine. (3 of 8) 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+.

The mid-10th-century reign of Harald Bluetooth marked the start of a second Viking age, but it was not to last. Discover the final days of the Vikings. (S1, ep 6) 7+.

Rob Kraft is hunting for Musashi, the biggest battleship ever built and considered to be unsinkable by the Japanese. (S1, ep 7) 7+.

Discover the machines making the coldest parts of our world inhabitable, from ice breakers to snow ploughs to an all-terrain vehicle. (S1, ep 4) 7+.

Landscape gardener Darren's 1986 Rover SD1 was once his pride and joy, but when tragedy struck it ended up rotting away in a dirty lock up. Can Car SOS come to the rescue.

Air traffic controllers hear an explosion when an Air Algérie flight lifts off. Moments later, the Boeing 737-200 crashes in the Sahara. (3 of 10) 7+.

Rauray, Normandy, 1944: British commander John Semken's Sherman faces a German Tiger just 110 metres away. Against all odds, he triumphs, revealing why the Allies were winning. 7+.

From a steamboat in a cornfield to the true story behind Hurricane Katrina's floods, discover how the Mississippi river shaped America. (S4, ep 10) 7+.

Bjoern joins forces with a rival company to rescue a truck that crashed into a cliff face, and Thord takes on a flipped tractor.

Asbestos was a product that seemed too good to be true - because it was. Meanwhile, in New York, two buildings explode sending debris flying through the streets. (S1, ep 7) 7+.

In 2005 a passenger jet crashed into the Mediterranean Sea. Follow the consequent criminal investigation which resulted in 9 men being charged with negligence. 7+.

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+.

Dr Robert Ballard dives into Turkish waters to discover the ships and submarines wrecked during the bungling of the WWII Gallipoli campaign and the heroic stories of their crews. 7+.

On a remote island, Matty makes a move with a home that is far from new and Billy races to replace his ailing roof before the Canadian winter arrives.

Experts make an astonishing find as they investigate the fate of Garuda Indonesia Flight 200, which crashed in 2007 killing 21 of the 140 people on board. 7+.