More everyday items are put under the microscope as we discover how saunas are produced and wheelchair lifts are manufactured.

How do they make the world's finest harp strings? How do they build roof windows that can keep out a hurricane? And, How do they make Belgian waffles?

Experts investigate to see if the fire on Apollo 1 that killed three astronauts was a cover-up. Was it a tragic accident or part of the moon landing conspiracy?

Experts investigate if there was a conspiracy to fake the moon landing. Does a secret report suggest the Nazis were involved in the Apollo space programme?

In 1962, three convicts try to escape from Alcatraz prison. Officials believe the men drowned, but a scientific experiment suggests they made it to shore.

In 2009, an Air France flight disappears, but could this tragedy happen again? After a huge area of Siberian forest is destroyed, it's a race to find the culprit.

More everyday items go under the microscope, revealing their production. How are objects such as detectable warning panels and model Stirling engines made?

More everyday items go under the microscope, revealing their production. How are objects such as micro drill bits and skiffs made?

More everyday items go under the microscope, revealing their production. How are objects such as ocean drone transformers and 3D puzzles made?

More everyday items go under the microscope, revealing their production. How are objects including Formula F race cars made?

More everyday items go under the microscope, revealing their production. How are objects including vacuum excavators made?

More everyday items go under the microscope, revealing their production. How are objects such as electric boats and fencing foils made?

How do they turn used aluminium cans into planes and rockets? Plus, how do they carve the traditional Black Forest cuckoo clock?

How do they build the ultimate car crushing colossus? Plus, how do Lea and Perrins concoct their Worcestershire sauce?

A look at how the amazing, and massive, decorations on Mardi Gras carnival floats are created, how rock candy is twisted together, and a look at how dentures are made.

How do they harvest and treat the world's most expensive tea? Plus, how does the Siekierki power plant of Warsaw, Poland heat half the city's homes?

How do they engineer the latest incarnation of the classic Royal Enfield Continental GT motorbike? Plus, how do 'art detectives' spot a forgery?

How do they blend science and destruction at crash test centres? And how do they piece together the complex mechanism of a pocket sized umbrella?

Josh Gates hunts down the original DeLorean time machine from Back to the Future. He scours iconic Hollywood locations with Christopher Lloyd.

Josh Gates and Christopher Lloyd's hunt for the DeLorean takes them to a superfan's collection in Massachusetts. And, they visit DeLorean's headquarters in Texas.

Confidential CIA files reveal a secret war for space between America and the Soviets. And, experts investigate American espionage during the Apollo programme.

Experts investigate the Lunar Landing Research Vehicle that nearly killed Neil Armstrong during training. Some believe this proves why the moon landing is fake.

More everyday items go under the microscope, revealing their production. How are objects including boat radar mounts made?

A look at how everyday items including Asian noodles and rotary engines are made, revealing the unique production processes used in making them.

A look at how everyday items including steel pulleys and acetate eyewear are made, revealing the materials and unique production processes used in making them.

More everyday items go under the microscope, revealing their production. How are objects including gyroscopic stabilizers made?

More everyday items go under the microscope, revealing their production. How are objects including shuffleboard tables made?

More everyday items go under the microscope, revealing their production. How are objects including air hockey tables made?

Jeremy Wade explores the sinking of the mighty SS Fitzgerald. Can new discoveries finally tell us what led to one of the biggest catastrophes on the Great Lakes?

Jeremy explores an incredible underwater discovery in the Arctic. Plus, he reveals details of a high-speed chase between a narco sub and the US Coast Guard.

Josh explores three legendary locations where stone labyrinths hide something incredible.

Josh Gates explores other great walls in India, England and Taiwan.

Josh Gates explores places where unusual heroes rule the day in Madagascar, India and Mexico.

Josh examines places darkened by the past, from a mansion connected to a haunted heiress in California to a festival marking the death of a demoness in India.

Confidential CIA files reveal a secret war for space between America and the Soviets. And, experts investigate American espionage during the Apollo programme.

Experts investigate the Lunar Landing Research Vehicle that nearly killed Neil Armstrong during training. Some believe this proves why the moon landing is fake.

New research shows the migration of ice planets may have helped start life on Earth, and stopped it being destroyed. How are they so vital?

Quasars are the brightest objects in space, powered by black holes, and the most mysterious. How do they shape the universe and ultimately aid in its destruction?

How do they make the king of cheeses, Parmesan? How do they keep the runways running at the world's busiest airports? How do they manufacture relaxing reclining chairs?

How do they weave a Turkish carpet? How do they use helicopter blade technology for cross country skis, and control the water at Niagara Falls?

How do they cast the streetlamps of Venice? How do they prevent another Titanic-like disaster? How do they grow tiny trees for the ancient Chinese art of penjing?

How do they make one of the world's fastest bikes? How do pilots train for death-defying acrobatics? And, how do they bring oil and gas up from the bottom of the sea?

More everyday items are put under the microscope as we discover how upright pianos are manufactured and flags are produced.

More everyday items are put under the microscope as we discover how oil lamps are manufactured and chocolate mints are produced.

More everyday items are put under the microscope as we discover how skeletal replicas are manufactured and ice buckets are made.