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How Things WorkSeason 1, Episode 9, "Cross Trainers, 3D Printers and Turnstiles", airs
How Machines WorkSeason 1, Episode 10, "Elevators, Gas Pumps and Air-Hockey Tables", airs
Dictators' HideoutsSeason 1, Episode 1, "Hitler's Last Secret", airs
Dictators' HideoutsSeason 1, Episode 2, "Mussolini's Underground Refuge", airs
Dictators' HideoutsSeason 1, Episode 3, "Hoxha's Bunker Madness", airs
Dictators' HideoutsSeason 1, Episode 6, "Stalin's Atomic Bunker", airs
LiveUltimate ProcessesSeason 1, Episode 1, "Guitars", airs
Ultimate ProcessesSeason 1, Episode 2, "Prodrive", airs
Ultimate ProcessesSeason 1, Episode 3, "Tractors", airs
Ultimate ProcessesSeason 1, Episode 4, "Vespa", airs
Ancient EngineeringSeason 2, Episode 1, "Earliest Arenas: The Colosseum", airs
Ancient EngineeringSeason 2, Episode 2, "How Gold Changed the World", airs
Ancient EngineeringSeason 2, Episode 3, "History's Deadliest Weapons", airs
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