🥑🤖🕯️ Avocados, CAPTCHA & a Victorian Super-Gadget: 3 Inventions With Wild Backstories

A stubborn avocado tree creates a global food icon, Luis von Ahn turns “prove you’re human” into a tech empire, and an 1868 candlestick tries to become the Swiss Army knife of lighting. Three unexpected invention stories you probably never learned in school.