Who? A woman whose invention forever changed the course of hobby rocketry history. Oh, and saved a bunch of lives, too.
“Stephanie L. Kwolek, a chemist credited with developing the ultra-strong Kevlar fiber used in bullet-resistant gear, an innovation that is estimated to have saved hundreds of lives since she created the polymer five decades ago, died June 18 at a hospice in Wilmington, Del. She was 90.” — Washington Post