Duo was fatally hit by a Tesla Cybertruck, the language-learning company announced this week. The snarky owl has been the face of Duolingo for over a decade. Why his sudden demise, and what's next?

So welcome to Quinnie – the official mascot for the International Year of Quantum Science and Technology (IYQ) 2025. Unveiled at the launch of the IYQ at the headquarters of UNESCO in Paris on 4 ...