National Geographic Channel Friday

A baby skunk has a bloated belly, and a rabbit has severe swelling in his jaw which could kill him if left untreated

Exploring Poland's most awe-inspiring engineering marvels and examining the towering legacy of the world's tallest wooden structure

The fate of Helios Flight 522, which in August 2005 crashed into a mountain in Greece after the flight crew and passengers were rendered unconscious

The crash of Korean Air Flight 801 in 1997, which killed more than 200 people and was blamed on a catalogue of errors made by the pilot and the airline

How a serious design flaw in a cargo door brought down a DC-10 aircraft, even though it had been identified by investigators as the cause of a similar crash two years earlier

The causes and unforeseen outcomes of 10 collisions between trains, ships and aircraft

The 10 most perilous expeditions in history, from the disappearance of Amelia Earhart, attempts to summit Everest, and the Lost City of Z

The story of a US submarine that had to deal with jammed torpedoes and a crew member needing an emergency appendectomy as it intercepts Japanese ships

The story of a submarine commander who bet that he could sink 15 vessels before returning to port, developing unprecedented tactics in his determination to win the wager

How the Viking Empire came to an end with the Normans finally gaining control of the English Kingdom in 1066

Fuzz Townshend and Tim Shaw come to the rescue of a Willys Jeep owned by a Second World War veteran, after it was targeted by arsonists

Documentary following Paul Salopek and his walking partners as they trek across China

Documentary following Paul Salopek on a trek across China

Investigators make a shocking discovery that threatens Russia's aviation system when a plane crashes onto the trans-Siberian railway, leaving all 88 people on board dead

Investigators struggle to explain why PenAir 3296 failed to stop after landing at a famously tricky Alaskan airport - until they uncover the truth

When a massive explosion tears a hole in a 747 over Hawaii, the search for answers ultimately leads to a deadly short circuit

Duty Manager Dan must deal with a check-in outage at the start of the busy school holidays. Airside Safety responds to a life-or-death medical emergency

Landing on an aircraft carrier demands precision flying. As the students tackle the longest section of the advanced phase, they know it's a test they must pass

Thord and Bjoern join forces when a truck threatens to tip down a hill and Thord's daughter, Malin, heads out to rescue a van but fails to reach it

In Puerto Rico, AMO agents pursue a sailing vessel that is making an attempt to leave with cocaine valued at $2.5 million