Visitors to the Osaka Kansai Expo can quench their thirst for science—and hydration—with drinks from the world’s first hydrogen-cartridge powered vending machine, which was installed on ...

Proof of complexity: Early modern vending machines actually used a similar system, before electrical machines took over. Quirk: It was devised to distribute Holy Water at temples, because "people ...

But Automats weren’t truly automatic. They were heavily staffed. As a customer removed a compartment’s contents, a behind-the-machine human quickly slipped another sandwich, salad, piece of ...

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