National Geographic Channel

'S7/E7'. In this episode we learn the science behind the fails when attempting a snowmobile ridge jump, cycling over a pump track, and lighting fires.

'S7/E8'. We learn the science behind the fails when launching off snow ramps on inflatable tubes, driving through water on ATVs, and when animals tackle staircases.

'S6/E6 - Power of the Pyramids'. Experts are the first to venture inside the heart of an unexplored pyramid.

'S2/E14 - Death Stroll'. On the cusp of winter, the Indigenous Peoples of Alaska work to secure food and safety for the brutal season ahead.

'S3/E8 - Lost Lake Dinosaur'. Cyril's next mission is the invasive paiche, a giant, air-breathing monster fish that can grow to twice the length of an adult human.

'S7/E8 - Flesh, Bones, Ketamine and Drones'. CBP discovers ketamine and human remains in packages from Europe. U.S. Border Patrol intercepts smugglers bringing migrants across the Rio Grande.

'Nazi Megastructures: Battle Ready Compilation. S1/E4 - Hitler's Inner Circle'. Behind the Fuhrer was a group of trusted generals who helped pave the way to his dream of total domination.

'S6/E7 - Egypt's First Pharaohs'. Archaeologists uncover the origins of one of history's great civilizations.

'S4/E5'. In this episode we learn just how many ways there are to embarrass, injure and humiliate yourself while volcano boarding or swinging on a trapeze.

'S4/E6'. In this episode we learn just how many ways there are to embarrass, injure and humiliate yourself while jumping off a boat or cornering on a bicycle.

'S2/E14 - Death Stroll'. On the cusp of winter, the Indigenous Peoples of Alaska work to secure food and safety for the brutal season ahead.

'S7/E8 - Flesh, Bones, Ketamine and Drones'. CBP discovers ketamine and human remains in packages from Europe. U.S. Border Patrol intercepts smugglers bringing migrants across the Rio Grande.

'S10/E7 - The Dope Boat'. HSI finds coke in Colombian sailboat. CBP rookie K9 finds drugs going overseas.

'S1/E5 - Rise Of The Supertalls'. Reaching new heights, skyscrapers evolve as engineers learn from past disasters.

'S1/E5 - Wake Up Call'. With New Orleans' population evacuated, the city's future remains unclear.

'S1/E3 - Hitler's Fighting Retreat'. The tide of war with Russia has turned and the Germans face a vast Soviet army bent on revenge.

'S1/E1 - How To Be President'. We look at who's run and who's won the US Presidency, and how you keep the top job once you've got it.

'S1/E2 - Manhunt'. The race is on to track down the man who shot JFK, but the assassin kills again before he is arrested, and this time a policeman is shot.