Ever wondered how bulletproof vests manage to stop bullets while staying light and flexible? Check out this TED-Ed video: “How do bulletproof vests work?” By 1975, Richard Davis had been shot at close range 192 times, but not a scratch—thanks to his groundbreaking invention: the bulletproof vest! Discover the chemistry behind Kevlar, the synthetic fiber that revolutionized safety, and how it all came to be.

[Ted-Ed]