In 1965, a new fibre was discovered by Polish American scientist Stephanie Kwolek. It was called Kevlar and it was found to be five times stronger than steel.

Since that discovery it’s been used to save thousands of lives through its use in bulletproof vests, but it’s also used in hundreds of other products from aeroplanes to protective clothing for motorcyclists.

Stephanie was one of the only female scientists working for the chemical firm DuPont and was passionate about encouraging more women and girls into the field of chemistry.

Tim O’Callaghan has uses archive of Stephanie Kwolek from 1996 to tell the story of her discovery.

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(Photo: Stephanie with items which use Kevlar. Credit: Smithsonian Institute)

The invention of Kevlar

Witness History