free
The Hashtag's Creator Is Glad He Gave It Away for Free
Chris Messina invented the hashtag and the concept of coworking spaces. Today, he works for Uber as a Developer Experience Lead. In this episode, Chris explains…
Introducing: How I Built This with Guy Raz
Guy Raz interviews the world’s best-known entrepreneurs to learn how they built their iconic brands. In each episode, founders reveal deep, intimate moments of …
reCAPTCHA and Duolingo: Luis von Ahn
In 2000, Luis von Ahn was starting his PhD in computer science when he attended a talk and happened to learn about one of Yahoo's biggest problems: automated bo…
