National Geographic Channel

'S1/E5 - Darrel Blocker'. A captured teen and secret tech bring the CIA closer to the Taliban's 'Butcher'.

'S1/E1 - Episode 1'. NASA learns from past space disasters to design safer missions toward Mars.

'S4/E4'. The Luftwaffe, a revolutionary German air force, created from nothing and fast-tracked by Hitler to annihilate the enemy from the skies.

'S4/E10 - Stress Box'. Discover the world of prison from the viewpoint of the family and friends of inmates who navigate a world where stress can tear families apart.

'S6/E1 - Jonestown Cult Suicide'. Revealing how US congressman Leo Ryan exposed the true horror behind Reverend Jim Jones' religious community deep in the Guyanese jungle.

'S4/E3 - Weapons of War'. Gladiators, catapults and clever ship designs made the mighty Roman war machine.

'S1/E5 of 8 - Darrel Blocker'. A captured teen and secret tech bring the CIA closer to the Taliban's 'Butcher.'

'S1/E1 of 2 - The Next Chapter'. Notre Dame Cathedral rises from the ashes, thanks to a restoration project like no other.

'Nazi Megastructures: Battle Ready Compilation. S1/E2 of 4 - Biggest Guns of Ww2'. The tide of war is changed by some of the most powerful guns from Europe to the Pacific.

'S7/E6 of 8 - Triple Jeopardy'. Jo Roger's rookies are put to the ultimate test with a triple rescue.

'S2/E1 of 14 - Good Day To Be Indigenous'. Alaska natives rely on the lands they inhabit as their source of life.

'S6/E3 of 8 - To the Grinder'. Homeland Security Investigations performs undercover drug sting, Customs and Border Protection finds cocaine in Rio Grande Valley.

'S2/E19 of 20 - Weather'. 20 New Science of Stupid Compilations of the best clips from seasons 2,3, 4 and 5. Hosted by dallas Campbell, with original tops and closings, according to the theme, and new graphics.

'S2/E20 of 20 - Games'. 20 New Science of Stupid Compilations of the best clips from seasons 2,3, 4 and 5. Hosted by dallas Campbell, with original tops and closings, according to the theme, and new graphics.

'S8/E9'. In this episode we learn the science behind the fails when kayak surfing, biking along ridges, and felling trees.

'S8/E10'. In this episode we learn the science behind the fails when attempting vehicle donuts, pouring water, and doing raised handstands.

'S7/E2 of 8 - Test Of Mettle'. Thord and Bjoern battle one of Norway's biggest storms in a decade to rescue a truck loaded with steel girders.

'S7/E3 of 8 - Roadblock Emergency'. Bjoern is put under pressure when a head-on collision between two trucks blocks an ambulance on an emergency call-out.

'S7/E4 of 8 - Absolute Destruction'. Thord and Bjoern face the ultimate rescue challenge when a truck is destroyed after crashing 40 metres down a mountainside.

'S7/E5 of 8 - Blizzard Showdown'. When a mountain blizzard causes a double accident, Bjoern's forced to call on his rivals for help.

'S7/E6 of 8 - Triple Jeopardy'. Jo Roger's rookies are put to the test with a triple rescue. But the mission gets off to a rocky start, when their most powerful truck gets stuck.

'S2/E17 - Soccer Balls and Mouse Traps'. Ever wondered how Beckham really bends it? Plus, if a three-year-old can use a playground slide properly, why can't adults?

'S2/E18 - Table Dancing And Sock Sliding'. Richard Hammond reveals how you can embarrass yourself when dancing on tables, pulling wheelies on quad bikes, or sliding on the floor.

'S2/E19 - Nunchucks And Rollerblades'. We learn just how many ways there are to embarrass and injure oneself when trying to stop whilst rollerblading, spinning nunchucks, and riding on miniature motorbikes.

'S2/E20 - Chest Bumps And Karate Kicks'. User-generated clips prove you can humiliate yourself when visiting a waterpark, performing a chest bump, and attempting a spinning karate kick.

'S2/E3 - Killer U-Boats'. Discover the story of the world's first stealth weapon, the U-Boat, and how it took on the might of the Royal Navy.

'S2/E5 - Buried Secrets Of The Gold Rush'. The streets of San Francisco, the Sacramento River, and the icy wastes of the Klondike in northern Canada are drained to tell the true story of 19th-century gold mania.

'S1/E1 - Land, Sea, and Space'. Dissecting three major engineering disasters on land, at sea, and in space.

'S1/E2 - Cutting Corners'. Warning signs at a mall, bridge flaws and crane oversights cause total collapse.

'S1/E1 - Forging Marvels: Connecting the Continent'. Underground or over mountains, transportation marvels connect European citizens.

'S1/E2 - Forging Marvels: Heavyweights'. Embark across Europe to uncover extraordinary feats of large-scale engineering.

'S1/E3 - Engineering Europe: Forging Marvels: High Heights'. Examine the ambition and challenges behind Europe's tallest structures.

'S1/E4 - Engineering Europe: Forging Marvels: Sustainable Wonders'. Europe's eco-friendly megaprojects protect and transform the continent.

'S1/E2 - Episode 2'. As tunnels push the limits, engineers study past failures to prevent disasters.

With unrivalled quality and spectacular imagery, this channel brings you award-winning documentaries from around the world - from wildlife adventure and exploration to natural phenomena and world cultures.

'S1/E2 - Worst Case Scenario'. Chaos ensues as the city floods and residents fight to survive.

'S4/E5'. During the brutal Battle of Berlin in 1945, 100,000 German civilians fight to the death and 6,000 commit suicide. How did the Nazis motivate ordinary civilians to fight?

'S4/E11 - Inmates vs. Officers'. At the Clark County Detention Center, keeping the peace comes down to the officers, but it's up to the inmates to give in to the control.

'S6/E2 - Fire in the Cockpit'. Relive the final moments onboard Swissair Flight 111, which crashed into the Atlantic Ocean near Canada in September 1998.

'S1/E2 - Episode 2'. As tunnels push the limits, engineers study past failures to prevent disasters.