Everything you think you know about addiction is wrong - Johann Hari - Ted Talks_part2/3 level = 20 4:59 on 2017/08/01
Everything you think you know about addiction is wrong - Johann Hari - Ted Talks_part1/3 level = 20 4:49 on 2017/07/30
10 ways to have a better conversation - part3/3-Celeste Headlee - TED Talks level = 15 3:43 on 2017/07/27
10 ways to have a better conversation - part2/3-Celeste Headlee - TED Talks level = 17 4:06 on 2017/07/24
10 ways to have a better conversation - part1/3-Celeste Headlee - TED Talks level = 16 3:24 on 2017/07/23