Can you solve the riddle and escape Hades? - Dan Finkel
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The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on the soul in front of it, they ll get returned to the land of the…
Source: TED-Ed (2020-10-13)