National Geographic Channel HD Tuesday

After four shark attacks leave locals and vacationers in shock, experts hunt for clues that could reveal the cause of these tragic events

A look how certain foods are made in factories, featuring maple syrup and polenta crisps

A look how certain foods are made in factories, featuring non-melting cheese and smoothie shakers

Reconstruction of the 1996 collision between a Kazakhstan Airlines jet and a Saudi Airways plane at 14,000ft, which was blamed on poor communication and outdated radar equipment

Ruins across Europe that show evidence of Hitler's infamous Blitzkrieg tactics, which represented a revolutionary new approach to warfare and brought Germany a string of victories

The Siege of York in 866, when the Great Heathen Army laid claim to the Northumbrian capital

Fuzz Townshend and Tim Shaw work on a year 2000 Ford Mondeo, the property of a widowed father of two who is unable to work on the car after three years of personal tragedy

Why did Apollo 13 explode 200,000 miles from Earth? Plus, the devastating fire that swept through the MGM Grand in Las Vegas

An investigation into what caused the fire inside the cabin of ValuJet Flight 592, resulting in the aircraft crashing shortly after take-off from Miami in 1996

After a massive earthquake triggered the deadliest tsunami in recorded history, multiple waves hit Thailand, forcing tourists to work together and save lives

As Germany faces catastrophic losses in the war, Hitler turns his focus to the extermination of all European Jews

Fuzz Townshend and Tim Shaw secretly restore a Fiat 500 for a man who was forced to abandon it by a series of family tragedies

Archaeologists unlock the mysteries of Egypt's most famous pharaoh, revealing surprising evidence

Investigators can find nothing wrong with a plane that crashed moments after take-off - but the real cause has far-reaching effects for commercial aviation

Part one of two. Documentary about Hitler's private army, formed in 1925 from volunteers who were subjected to intense propaganda and aspired to become part of a racial elite

Part two of two. A look at the role of the SS in the Holocaust, with many volunteering to run the death camps, believing the massacre was for the good of their nation

Documentary examining the Germans who fought for the Allies during the Second World War, including a Spitfire pilot and an officer who caught a fugitive

Careening into a mountaintop just minutes from the runway, an American charter flight becomes the worst aviation disaster in Portuguese history

A pilot shot down during the Vietnam War is held in a prison camp for three months, but escapes to make a gruelling 25 mile journey back to his own lines

The Coastguard is called to help a group of people stuck on the side of a cliff, while an investigation of a suspicious boat yields unexpected results

Rich makes a shock discovery in a science lab, while Diego looks to make a mint from old spark plugs and Dave gains access to a huge metal factory

The team tries to convince the owner of an old Maryland silk mill to sell the property when one-of-a-kind items are discovered inside

Jay makes a big find under a pile of rubble in an 18th-century mill, including a set of antique tiles with an estimated value of $140 each

From raw materials to finished products, how are mass-produced favourites really made? Discover the story behind cookies, ice cream sandwiches and cheese-filled pretzel pockets

From raw materials to finished products, how are mass-produced favourites really made? Discover the story behind grape jam, pierogis and chocolate-covered pretzels

Exploring the life-or-death journeys of migrating animals across the world. In spring, animals from all over the South Atlantic descend on the Falklands

A look at the monarch butterfly's incredible multi-generation migration from Mexico to Canada - a round-trip that none of them lives to complete