After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. At TEDxCMU, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately — all for free.
You may also like
4.50K Views1 Comments0 Likes
In clear, nontechnical language, string theorist Brian Greene explains how our understanding of the universe has evolved from Einstein's notions of gravity and space-time to superstring theory, where minuscule strands...
1.30K Views0 Comments1 Likes
Using sleight-of-hand techniques and charming storytelling, illusionist Marco Tempest brings a jaunty stick figure to life onstage at TEDGlobal.
889 Views1 Comments0 Likes
Cameron Russell admits she won "a genetic lottery": she's tall, pretty and an underwear model. But don't judge her by her looks. In this fearless talk, she takes a wry look at the industry that had her looking highly ...
3.71K Views0 Comments0 Likes
Dan Gilbert, author of Stumbling on Happiness, challenges the idea that we'll be miserable if we don't get what we want. Our "psychological immune system" let's us feel truly happy even when things don't go as planned.