A cryptozoologist investigates reports of a sea monster in Alaska. He reviews eyewitness accounts and examines never-before-seen video evidence.

Joe and Emmett Hayes head to Nevada desert to observe, investigate and embrace the pandemonium of storming Area 51. And, they dive into the history of the facility.

Paul Beban searches for the truth about sea monsters. He travels to Vermont's Lake Champlain to see if an unclassified creature lurks in its dark depths.

Learn how platinum cleans your car's exhaust fumes, and find out how they build a space station 360 kilometres above the earth?

How do they make the tank piercing super bullet? Plus, how do they forge the infamous torture weapon, the dentist's drill?

How do they make giant floating power stations that provide power around the world? Plus, how do they fabricate the world's smallest aircraft?

How do they create coloured crayons used by children and artists around the world? Plus, how are India's most treasured mirrors made?

How do they build the steam-powered paddleboats that cruise the Mississippi River? And, how did they create the defence system called 'the waterwall'?

A look at how old concrete is recycled into new roads, the hand tailored suits that are fit for 007 and the ovens that clean themselves.

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?

The sunken town of Baiae remains frozen in time, lying on the seabed of the Bay of Naples. Now, marine archaeologists investigate its fascinating secrets.

Thermopylae was the site of an iconic ancient battle. Legend says that in 480BC, 300 Spartan warriors died there - experts reconstruct the lost battlefield.

Find out how nail files, birch canoes, boat hardtops, and high voltage circuit breakers are made.

Ever wondered how everyday items are made? Find out how macarons, pine needle baskets, and micrometers are made.

Ever wondered how everyday items are made? More common items including endoscopes, megaphones and uranium go under the microscope.

Ever wondered how everyday items are made? More common items including hollow disk pumps and yachts go under the microscope.

How are everyday objects made? Common items including collagen and plier staplers go under the microscope.

How are everyday objects made? Common items including Thai barbeques, diving masks and fins, and bassoons go under the microscope.

How do the islanders of the Outer Hebrides use pedal power to weave world-famous Harris tweed? And, in Iceland, how do they prepare fermented shark?

How do they make the world's most expensive and luxurious beds? And, how do they deliver supplies and equipment to the International Space Station?

How do they make the distinctive Borsalino hat worn by Indiana Jones? And, how do they make a bicycle which can fold up to a tenth the size of a regular bike?

How do they make the world's most famous electric guitar, the Fender Stratocaster? And, how do they make Swedish fermented cod roe Kalles caviar?

It's been tipping over for 800 years - what's the gravity-defying magic behind Pisa's leaning tower? And, how are chocolate digestive biscuits manufactured?

How did the ancient Greeks invent parchment with techniques still used today? And how do they make shuttlecocks, the fasting moving object in sport?

Using material salvaged from scrap yards, Adam and two colleagues design and build three motorised monsters of destruction, inspired by post-apocalyptic worlds.

Adam wants to build his own version of King Arthur's legendary sword - Excalibur. Using the iron found in a meteorite, he attempts to make an indestructible weapon.

Neutron stars are violent phenomena that defy the laws of physics. New discoveries reveal they have the power to destroy planets and even other stars.

Supernovas are the violent death of giant stars. New discoveries reveal how these events create the elements that are essential to all life in the universe.

Find out how wooden matches, tillage machines, telescopic gangways, and mabe pearls are made.

Find out how mosquito coils, solar-assist tricycles, palm oil, and fiberglass chopper guns are made.

Find out how wood toys, retro toasters, laboratory furnaces, and aerogels are made.

Find out how combination squares, farmed shrimp, ball valves, and string trimmers are made.

Find out how Chinese style furniture, electrical switches, Thai fish sauce, and cappers are made.

Find out how race car oil, plaster mouldings, lemongrass oil, and fly tying vices are made.

Josh Gates explores legendary places of protection, from Pablo Escobar's secret Colombian hideaway to a floating kingdom on Peru's Lake Titicaca.

Josh visits three sites where the journey is the destination in Bolivia, French Guiana and Turkey.

Josh investigates the mystery of the crystal skulls in Belize, Spain and Scotland.

Josh explores three iconic monuments in New York, Istanbul and Honolulu.

Steel magnate Andrew Carnegie and coal king Henry Clay Frick join forces to create the most power industrial empire during America's Gilded Age.

Montana rancher Clayton finds what might be a rare and valuable fossil on his family's property. In Wyoming, Mike and his son uncover a triceratops horn.

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.