Listen to an engaging ACM ByteCast episode featuring Luis von Ahn, co-founder and CEO of Duolingo, as he discusses his journey in pioneering crowdsourcing technologies. Explore the conception of reCAPTCHA at Carnegie Mellon University, its subsequent acquisition by Google, and von Ahn's transition to creating the world's most popular language-learning platform. Gain insights into the challenges of starting a tech company in Pittsburgh, the dominance of English in computing, and the global impact of free language education. Discover user stories that highlight Duolingo's transformative effect and glean valuable advice from this accomplished entrepreneur and computer scientist.