Some think the waving US flag on the moon proves that NASA faked the lunar landing. Experts' quest for the truth leads to some of Hollywood's biggest names.

Jeremy explores a revolutionary technique that could identify the Loch Ness Monster. Plus, how did a man survive for several days trapped in a shipwreck?

Jeremy Wade reveals the new deep-sea discoveries that might prove the existence of the infamous giant squid. Is this underwater monster the legendary kraken?

How do they build remote-controlled underwater robots to do jobs too dangerous for human divers? How do they make the world's most cuddly teddy bears?

Ever wondered how a Morgan Aero Coupe was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how a Porsche 911 was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how a Ferrari FF was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how a Zenvo ST 1 is made? Join the How It's Made crew as they go to its birthplace and explore its gorgeous exterior.

Ever wondered how a McLaren 65OS is made? Join the How It's Made crew as they go to its birthplace and explore its gorgeous exterior.

Ever wondered how a Falcon F7 is made? Join the How It's Made crew as they go to its birthplace and explore its gorgeous exterior.

Ever wondered how a Lotus Evora is made? Join the How It's Made crew as they go to its birthplace and explore its gorgeous exterior.

Picture your dream car - does it look like a Bentley Mulsanne? The crew heads to its birthplace, revealing the inner workings and gorgeous exterior.

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?

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

Some think the waving US flag on the moon proves that NASA faked the lunar landing. Experts' quest for the truth leads to some of Hollywood's biggest names.

Alaska's Coast Guard fights risky waters to maintain buoys standing three stories tall. Plus, an army of Alaskans build a steel ferry - several tons at a time.

A mega fish factory churns out 3 million pounds of seafood a day. Plus, a flying ambulance saves lives at 14,000 feet above Alaska's wilderness.

Ever wondered how a Ferrari FF was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how an Audi R8 was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered a how Rolls Royce Phantom was made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how a Maserati Quattroporte made? Join the How It's Made crew as they go to its birthplace, explore the inner workings and its gorgeous exterior.

Ever wondered how high-end cars are manufactured? Join the crew as they explore the origins, inner workings and technical specs of some of the world's finest cars.

Ever wondered how a Lamborghini Aventador is made? Join the crew as they go to its birthplace and explore its gorgeous exterior.

When Pompeii was destroyed by an apocalyptic volcano, another town was destroyed, too - Herculaneum. It is one of history's most perfectly preserved towns.

The Roman Empire built Hadrian's Wall to guard its frontiers: new discoveries reveal who the Romans were trying to keep out with this 72-mile-long megastructure.

Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert.

Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets.

Despite Pluto's appearance as a dark and frozen world, scientists are investigating whether there might be warm liquid water beneath the surface.

Picture your dream car - does it look like a Porsche Panamera? The crew heads to its birthplace, revealing the inner workings and gorgeous exterior.

Picture your dream car - does it look like a Peugeot RCZ R? The crew heads to its birthplace, revealing the inner workings and gorgeous exterior.

Picture your dream car - does it look like an Ariel Atom 3S? The crew heads to its birthplace, revealing the inner workings and gorgeous exterior.

Picture your dream car - does it look like an Audi S8? The crew visit its birthplace, revealing the complex inner workings and the gorgeous exterior.

Picture your dream car - does it look like an Ultima Evolution? The crew go to its birthplace, revealing the inner workings and gorgeous exterior.

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?

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?

Nick and Katrina spend 72 hours untangling the mysteries of Monroe Demon House. But while Katrina engages with the occult, Nick engages with a dark presence.

The 120-year-old St. Ignatius Hospital in Washington has been abandoned since 2003, but is hardly uninhabited. Nick Groff and Katrina Weidman check in.

Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert.

Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets.