Nat Geo+1

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July 1940. In the North Atlantic, a British escort pins down one of Germany's top U-boat captains. Otto Kretschmer and crew face a barrage of underwater bombs. 7+.

Following a terrifying freefall, passengers hail their captain a hero, but the investigation tells a different story. (S2, ep 4) 7+.

U-Boats nearly won Hitler the war when they struck the Royal Navy's ships. As experts drain the ocean, the story of the world's first stealth weapon is revealed. 7+.

Archaeologists search for treasure from the time of Egypt's famous queen, Cleopatra and discover how she used perfume to enhance and embellish her power. (1 of 8) 7+.

one of the most versatile materials in the construction world. It's both practical and beautiful, but when it fails, it's not all it's cracked up to be.

Tim and Fuzz take on a MINI Mayfair bought by Donna with her late father's inheritance. Dreaming of a Cooper, she ended up with a rust-ridden wreck. (S14, ep 5) 7+.

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+.

Climb aboard the Bismarck and Tirpitz, battleships of record-breaking proportions and the ultimate status symbols of the Third Reich. (S2, ep 5) 7+.

The 2004 tsunami was the most brutal natural disaster of our time. What contributed to the magnitude of the killer wave, and how can a similar tragedy be prevented? 7+.

Tim and Fuzz head to Derbyshire to secretly fix up petrolhead Ged's 1971 supercar after health issues stalled his plans to restore it. (S7, ep 8) 7+.

At Italy's busiest airport, police seize bundles of drug money, stop a woman with a package strapped to her, and detain a man hiding his past.

Experts investigate the collision of two planes over the Grand Canyon in 1956, uncovering a frightening problem that threatened the entire aviation system. 7+.

Tim and Fuzz take on Raymond's 1990 Nissan Pulsar GTI-R, the dream build he couldn't finish. From its corroded shell to scattered parts, this is a risky build. (S14, ep 6) 7+.

Tim and Fuzz take on a 1973 saloon which has been abandoned for decades in a dusty barn after owner Margaret was unable to complete its restoration. 7+.

Discover the innovations powering Europe from Tower Bridge's lift system to a Dutch bridge and a new Basque high speed rail link. (S1, ep 1) 7+.