Ancient Impossible (2015)

S1E6 Power Tools

Remarkable automated stone-cutting machines, advanced drills that slice through the toughest granite, fire engines ready to tackle blazes anywhere in the city, and delicate surgical instruments fine enough for eye procedures—all these tools date back thousands of years, not from today's era. Many of these innovations faded into obscurity, remaining undiscovered for centuries. How did ancient civilizations develop such extraordinary power tools? What caused their disappearance, and might there be even more sophisticated ancient devices yet to be uncovered?