Nat Geo+1

7+.

7+.

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In summer, increased boat traffic brings a surge in emergencies that authorities must handle - while smuggling mafias continue to navigate the seas. (5 of 8) 7+.

Air traffic controllers hear an explosion when an Air Algérie flight lifts off. Moments later, the Boeing 737-200 crashes in the Sahara. (3 of 10) 7+.

The Emperor: Emperor Commodus shocks Rome by becoming a gladiator. Over 14 days of extravagant games, he indulges his fantasy of godhood. (S1, ep 5) 7+.

Learn about how Japan and Germany's infrastructure affected the war effort. (S3, ep 1) 7+.

Meet the world's largest 3D printer, a huge tunnel-boring machine and engineers working on a machine that can create single-piece metal parts. (S1, ep 6) 7+.

Porsche 911 Targa: Early onset dementia has left Ben struggling to maintain his beloved 1973 Porsche 911 Targa. Can the boys breathe new life into this old classic? 7+.

Shocking look at the fate of United Airlines Flight 232 which crashed into Sioux City's runway in 1989. The subsequent explosion left 111 people dead. 7+.

It was the symbol of luxury and cutting-edge technology, but in 2000 an accident on takeoff claimed the lives of 109 passengers and crew. What went wrong? 7+.

Remnants of colonisation attempts, a refugee ship and submerged subway cars reveal hurricanes' impacts on America's past and future. (S4, ep 6) 7+.

Thord and Bjoern open a new garage. Bjoern heads out to rescue a truck, but the driver has Bjoern losing his temper, and almost his finger! (S6, ep 4) 7+.

At Toronto Pearson International Airport, the sub-zero temperatures push the de-icing station to its limits, as snow and freezing ice delays take offs. (1 of 10) 7+.

In stormy skies above Chicago an American Eagle 41-84 spins out of control. Was it a rare weather phenomenon or a fatal design flaw that caused the crash? 7+.

During a regional commuter hop in New Zealand, the pilots of Eagle Airways Flight 2300 struggle to lower their landing gear. (4 of 10) 7+.

Straight after takeoff, Air Florida flight 90 stalled and plunged into Washington's Potomac River. Experts examine what caused the catastrophe. 7+.

An ice jam has severed the remote community of West Dawson from emergency services, leaving residents trapped.