National Geographic Channel Saturday

Heidi Rose finds a mate, a herd of onagers are wrangled into the barn for their annual check-ups, and the zoo's red pandas step on the scale

The complicated investigation into the crash of TANS Peru Flight 204 on the approach to Pucallpa airport in August 2005. Key evidence was looted from the wreckage

Experts investigate the 1956 collision of two planes over the Grand Canyon in Arizona, and reveal a problem that threatened the entire aviation industry

The case of a plane that flew into a massive storm over Indonesia during the country's rainy season, but made a seemingly impossible emergency landing with only one casualty

Some of the most dramatic collapses in history, including the destruction of buildings, towers, bridges and cranes

Author Tim Malton explains his theory about the cruise liner's demise, arguing it could have been down to strange atmospheric conditions in the Atlantic

How Dr Robert Ballard inadvertently located the wreck of the ill-fated liner while conducting a covert investigation for the US Navy during the Cold War

Experts reveal what they have learned about the middle ages from a collection of treasure found by a metal detector enthusiast in 2009

Fuzz Townshend and Tim Shaw secretly restore a classic 1965 Mercedes-Benz 230SL, which the owner had to abandon as a project after suffering a heart attack

Fuzz Townshend and Tim Shaw secretly restore an Aston Martin DB6 for an owner who has been prevented from working on it by health problems

Tim and Fuzz restore a VW Polo G40

The story behind the sinking of the HMS Coventry during the Falklands War, when on May 25, 1982, Argentinian jets attacked the vessel causing it to capsize within 20 minutes

In April 1940, German battleships attack key Norwegian ports, but the British Navy are on their tail in a fierce fight over control of Norway

In May 1941, the new Nazi battleship Bismarck set out to destroy Allied convoys in the Atlantic. It was up to the Royal Navy to stop it in its tracks

Autumn 1942: German and Italian forces threaten British-controlled Egypt and the Suez Canal as the war comes to a head in the North African desert

In Japan, David explores the concept of mastery by meeting with people who spend a lifetime refining a single skill

Thord's skills are put to the test with the rescue of an excavator, but there is trouble when rookie Terje's reckless driving ends in disaster

When a salmon truck crashes into a ditch, it kicks off a bad night for Thord. With truck drivers in trouble all over his territory, his team is pushed to the limit

The team discovers a German machine gun, capable of shooting up to 1,500 bullets per minute and some letters from the Civil War

Sean Rich estimates the value of a derringer pistol, while the team examines a Captain America comic book that a fan went to great lengths to get hold of

A look at the production of classic Canadian candy and break-apart chocolate oranges

A look at the production of devilled egg potato salad, puff pastry cheese bites and potato chip chocolate bars

The factory that produces the world's most powerful tractors, and which incorporates a giant iron foundry into its advanced manufacturing operation

How high-tech machinery, hand-crafting skills and global logistics combine to make a best-selling brand of sneakers across the world

A hedgehog needs a manicure, and a parakeet is in dire condition

A chance to buy goods from the comfort of home