Nat Geo HD

At the Columbus Zoo, there's a gator on the loose and Hank the elephant practices his yoga. At The Wilds, an African painted dog overheats. (S1, ep 5) 7+.

The staff at the Columbus Zoo say goodbye to their polar bears Neva and Amelia Gray before they head off to the Maryland Zoo. (S1, ep 6) 7+.

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A naval vessel is involved in two thrilling drug busts, as the helicopter crew attempts to rescue a mysterious man at sea. 7+.

When crisis strikes a pilot really earns his stripes. For one, that meant pulling off one of the most remarkable landings ever. (S1, ep 3) 7+.

Marine archaeologists investigate the lost wrecks of World War II as they investigate the Nazi secrets that are hidden under water. (S1, ep 2) 7+.

Babe Flute, Casino Shoe, Cursed Amethyst: Is a beautiful gemstone in London's Natural History Museum really cursed and what do the strange symbols on its setting mean? (S3, ep 7) +.

Apollo 13, MGM Grand, Genoa Bridge: Why did Apollo 13 explode 200,000 miles from Earth? And what caused the devastating fire that swept through the MGM Grand in Las Vegas? 7+. (4 of.

Presenter Tim and master mechanic Fuzz whisk a Ford Anglia from its garage in Bournemouth. Can they surprise owner James with their secret motor makeover? 7+.

Experts discover a missing pilot's unwitting part in a fatal crash as they investigate the collision between United Express 5925 and a private plane. 7+.

A look at the deadly and resilient weapons and constructions built by the Nazis in their bid for world domination. (S1, ep 1) 7+.

Tim and Fuzz take on a Mercedes SLK with huge sentimental value for owner Lili, but this stylish roadster hides major mysteries. (2 of 10) 7+.

Car SOS restores a 1984 Ferrari 308 GTS, famous from Magnum PI, for retired Police Sergeant John, who paused the project to support his family. (S13, ep 10 of 10) 7+.

A tense emergency unfolds as illicit drugs are found onboard a plane, paramedics rush to assist a woman displaying symptoms of a heart attack. (S1, ep 10) 7+.

Quick-thinking Captain Frank Geib saved Northwest Airlines Flight 85 from a horrific disaster in 2002. What had gone wrong 35,000 feet in the air? 7+.

When it first flew in 1952, the Avro Vulcan pushed the boundaries of aviation by flying higher and farther than any previous long-range bomber. (2 of 5) 7+.

Tim and Fuzz face a mission: to rescue a Frogeye Sprite. Rusted and falling apart. Can they restore it with the help of Dame Joanna Lumley? (S14, ep 1) 7+.

Tim and Fuzz take on a Mercedes SLK with huge sentimental value for owner Lili, but this stylish roadster hides major mysteries. (2 of 10) 7+.

Moments after taking off from the Norwegian island of Vaeroy, a turboprop plunges into the North Atlantic. (8 of 10) 7+.