Richard Hammond reveals the startling engineering connections behind Hong Kong International Airport, one of the busiest and biggest in the world, sited on a specially constructed island. Then the world's largest construction project it drew inspiration from a 13th Century Arab irrigation machine to create new land, and a WWII bomber and car suspension to make the terminal building light, airy and typhoon-proof. To reduce lost baggage designers turned to a bizarre Cold War spy device and a brass band was the proof of a crucial scientific principle which protects pilots from wind shear, all resulting in the new gateway to Asia.

In this humorous hour-long format we pitch three passionate anglers, from three different global destinations to discover who is the King Fisher. This episode sees Catfish Queen Natalie, originally from the UK but now based in Spain, take on Bass Master Stephen from Texas, and Saltwater specialist Cedric from Puerto Rico. After a slow start in Spain the fish are soon flying in Texas, before the grand showdown in Puerto Rico will everyone have the sea legs to survive a fishing shoot out?

Hazen Audel joins local tribesmen in the Dulong valley, South West China. Battling raging waters and forests full of venomous snakes and bears, they head out on a mission to the snow capped mountains to gather highly valuable medicinal herbs and honey from hives defended by huge swarms of bees. Hazen must prove himself the Dulong and return to the village with supplies that will feed the village and offer them a valuable source of income.

Leading aviation experts are confronted with a shocking theory as they investigate one of the greatest aviation mysteries of all time.

A real-life Indiana Jones, Mike Fay, flies from the southernmost tip of Africa to Morocco, crossing 20 countries and taking 100,000 photographs.

Rolling of the assembly line and taking the world by storm in 1964, the Porsche 911 is now one of the worlds iconic sports cars. Still produced on the same grounds that gave birth to the first 911, this car has grown to 14 variations. From the "modest" 911 Carrera with a top track speed of 185 mph to the 911 GT3, a street legal racecar that tops out at 194 mph; this Ultimate Factory, in Stuttgart, Germany, can offer a color, style, and speed for even the most fastidious driver.

More than a million passengers pass through Dubai International Airport every week. Behind the scenes 60,000 people from across the globe are hard at work. From ensuring the safety of the runway surface to dealing with drunken passengers, this episode of "Ultimate Airport" offers a rare chance to get to know the unsung men and women carrying out the often overlooked but vital tasks that make this multi-billion dollar airport run smoothly.

At the height of summer in northwestern France, the pilots of Proteus Airlines Flight 706 deviate from their flight path to go on a sightseeing detour. Determined to give their passengers a bird's eye view of a legendary French ocean liner, they fly in a low loop around Quiberon Bay. But just as they're completing a 360 around the ship, Flight 706 suddenly explodes. From a nearby airplane, a local journalist captures the scene as the wreckage falls from the sky. And as the tragedy sinks in, so does the mystery-despite thousands of eyewitnesses, no one seems to know what happened.

Three planes fatally out of balance force investigators to question every calculation. It's a flight risk that's entirely preventable, and yet repeated disasters reconfirm the need for critical backup systems. With nearly 90,000 pounds of denim on board, a cargo plane in Miami crashes moments after lifting off. A packed commuter flight slams into a North Carolina hangar, revealing a deadly industry oversight. And, the NTSB is called in when a jumbo jet loaded with armored military vehicles pancakes to the ground in Afghanistan.

In the late 1960s BMW were looking to break into the US market and the sports saloon they created to make the right waves was the 2002, a 2 litre, 100bhp tourer, it instantly became a successful race car with Hans Stuck winning the Nurburgring 24-hour race in 1970. As a result the 2002 arrived in the states in 1967 to instant success and rapid and highly profitable sales. BMW didn't rest on its laurels, in 1973 they started producing a fuel injected turbo version of the 2002 : the tii. Launched at the 1973 Frankfurt Motor Show it was BMW's, and Europe's, first turbocharged production car, it produced 170 bhp and had a top speed of 115mph and where its predecessor had been a success on the track the tii continued on the World rally Circuit where it went on to win many rallies and hill climbs. In actuality only 1,672 Turbos were ever built, but they achieved BMWs aim of making them a World renowned brand name in a few short years and salvaging the tatters or the BMW distribution network in the US. With its striking "shark nose" front end the 2002 set the style that BMWs were to follow to this day. Very few 2002tiis now exist making them not just a fun car to drive but also a sure fire commodity on the classics market.

Three planes fatally out of balance force investigators to question every calculation. It's a flight risk that's entirely preventable, and yet repeated disasters reconfirm the need for critical backup systems. With nearly 90,000 pounds of denim on board, a cargo plane in Miami crashes moments after lifting off. A packed commuter flight slams into a North Carolina hangar, revealing a deadly industry oversight. And, the NTSB is called in when a jumbo jet loaded with armored military vehicles pancakes to the ground in Afghanistan.

Journalist Phil Cox returns to Sudan to investigate allegations of illegally deployed chemical weapons; but when he learns that there's a "kill or capture" bounty on his head his plan starts to unravel. Ambushed by government backed militias, Phil knows it's only a matter of time before he's tortured and possibly killed. With all his communication devices destroyed he must get word to his producer and wife back home, but will she be able to save him?

In this episode, witnesses in Texas claim their confusing physical illnesses are the result of a massive, fiery, diamond-shaped object; a mass sighting in Arizona of lights gliding across the sky prompts accusations of a government cover-up by some; and in the skies above Brazil, jet fighters play a high stakes game of cat and mouse with unknown lights.

Above France, a highly trained crew puts a commercial airliner to the test. But as they prepare to land, the captain suddenly loses control.

In the late 1960s BMW were looking to break into the US market and the sports saloon they created to make the right waves was the 2002, a 2 litre, 100bhp tourer, it instantly became a successful race car with Hans Stuck winning the Nurburgring 24-hour race in 1970. As a result the 2002 arrived in the states in 1967 to instant success and rapid and highly profitable sales. BMW didn't rest on its laurels, in 1973 they started producing a fuel injected turbo version of the 2002 : the tii. Launched at the 1973 Frankfurt Motor Show it was BMW's, and Europe's, first turbocharged production car, it produced 170 bhp and had a top speed of 115mph and where its predecessor had been a success on the track the tii continued on the World rally Circuit where it went on to win many rallies and hill climbs. In actuality only 1,672 Turbos were ever built, but they achieved BMWs aim of making them a World renowned brand name in a few short years and salvaging the tatters or the BMW distribution network in the US. With its striking "shark nose" front end the 2002 set the style that BMWs were to follow to this day. Very few 2002tiis now exist making them not just a fun car to drive but also a sure fire commodity on the classics market.

The show that takes the most spectacular and painful user generated clips ever recorded, and combines them with cold hard science is back for a fourth season. In this episode we learn just how many ways there are to embarrass, injure and humiliate yourself while doing a ski flip, attempting the limbo, or flying down a speedy zipline.