National Geographic Channel HD Today

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The huge production unit not only responsible for creating the world-renowned Harley-Davidson motorcycle, but also able to manufacture up to 50 machines per hour

From pilot error to meltdowns within air traffic control, investigators dig deep into three mid-air collisions that seem to defy logic

After a century of power, the mighty Inca Empire collapsed in less than a decade following the invasion of Spanish conquistadors

The story of a newly appointed US submarine commander who took on an entire enemy convoy in the South Pacific

The story of the Second World War, featuring haunting images of Jewish persecution and footage of Hitler taken by his partner Eva Braun at his Alpine retreat

When basketball legend Kobe Bryant is killed in a helicopter crash in Los Angeles, investigators look for clues amid a global outpouring of grief

After a Boeing 727's near-fatal nosedive over Michigan, investigators risk their own lives to determine why the plane fell out of the sky

An American battalion liberates a French port, but within hours of success, the surrounding area is retaken by Nazi forces and they find themselves besieged

Undersea remains reveal the extent of the Roman empire's naval power, Featuring the world's oldest shipwreck and evidence of how the Romans harnessed the power of volcanoes

As Thord and Terje risk their lives to save one truck's valuable cargo, Jo Roger and Stig help another truck which is stuck blocking a main road

Uncovering what is left of Hitler's ambitious structures, which were built in a bid for world domination, beginning with a look at the Atlantic Wall

The case of Luxair Flight 50, which fell out of the sky just a few miles short of Luxembourg airport while making a rushed approach through heavy fog

Fuzz Townshend and Tim Shaw secretly get a classic 1960s Sunbeam Alpine belonging to a former mechanic ready to go back on the road

Car enthusiast Tim Shaw and master mechanic Fuzz Townshend take on a 1934 Singer Le Mans two-seater sports car, which had its last outing in 1998

A tour of some of the world's most expensive and useless airports, Plus, hotels that collapsed and why a Shanghai apartment tower dropped like a slab

Investigators struggle to gain access to the remote site where a Santa Barbara Airlines flight crashed in 2008

Fuzz Townshend and Tim Shaw head to Southampton to take on a 1969 Jensen Interceptor. Owner Nick cherished his dream car until he got extreme arthritis

US Customs and Border Protection agents in El Paso finds a massive shipment of meth hidden in a train carriage and quickly move to stop the cartel from taking it back

HSI enacts a controlled delivery of gun parts in NYC. CBP faces a surge of meth coming into Calexico, and questions an alleged sex tourist in Miami

The team evaluates a medieval lance and a 17th-century rapier. Plus, two guns that do not appear to have triggers are analysed

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

A look at the production of pickles, fizzy drink tablets and bliss balls

A look at the production of jumbo lollipops, Chinese hot and sour soup and hedgehog chocolate bars

Xanthus the ferret is rushed into the clinic for emergency care and a young marmoset has a gender reveal party

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

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