We like to think of technological innovation as a gradual, steady, and fairly linear process. However, this is not true. Archaeological excavations throughout the world have revealed some mysterious ancient technologies that make modern people drop their jaw. Here are 13 of the most mysterious ancient technological discoveries ever discovered. 1. Greek Fire Greek Fire When the Muslim fleet of the Umayyad Caliphate tried to besiege Byzantine Constantinople in 674, their ships caught fire. At first they were not worried. However, this was no ordinary fire. Once set on fire, it could not be extinguished, and when the whole fleet caught fire, even the sea itself caught fire. The Umayyad Caliphate perished due to that fire. No recipe has survived, but historians speculate that it may have included oil, sulfur or gunpowder. What makes Greek fire so impressive, however, is not the chemistry of the fire itself, but the structure of the pressure pump that the Byzantines used to launch it at...
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