The obsolete know-it-all | Ken Jennings | TEDxSeattleU
15:57
Cómo hacer que tu cerebro se concentre | Chris Bailey | TEDxManchester
14:11
How social media is changing how you talk | Adam Aleksic | TEDxPenn
19:01
Teaching English without Teaching English | Roberto Guzman | TEDxUPRM
17:05
Aprender idiomas es sencillo | Matthew Youlden | TEDxClapham
15:15
3 mentiras de la psicología positiva | Ramón Nogueras | TEDxGranada
10:33
How to know your life purpose in 5 minutes | Adam Leipzig | TEDxMalibu
19:27
The first 20 hours -- how to learn anything | Josh Kaufman | TEDxCSU
14:45