Results come from Exumo's own index. Data from YouTube; Exumo is not affiliated with YouTube.

1. 18:33

   Abraham Verghese: A doctor's touch

   TED · Sep 26, 2011 · 495.9K views

2. 13:04

   Elizabeth Murchison: Fighting a contagious cancer

   TED · Sep 22, 2011 · 49.5K views

3. 4:17

   Amy Lockwood: Selling condoms in the Congo

   TED · Sep 21, 2011 · 59.6K views

4. 14:09

   What we learned from 5 million books

   TED · Sep 20, 2011 · 237.6K views

5. 20:20

   Niall Ferguson: The 6 killer apps of prosperity

   TED · Sep 19, 2011 · 369.8K views

6. 13:13

   Lauren Zalaznick: The conscience of television

   TED · Sep 16, 2011 · 98.5K views

7. 11:03

   Richard Resnick: Welcome to the genomic revolution

   TED · Sep 15, 2011 · 228K views

8. 9:06

   Kate Hartman: The art of wearable communication

   TED · Sep 15, 2011 · 46.8K views

9. 18:40

   Misha Glenny: Hire the hackers!

   TED · Sep 13, 2011 · 113.6K views

10. 18:52

    Yasheng Huang: Does democracy stifle economic growth?

    TED · Sep 12, 2011 · 82.3K views

11. 4:31

    Shake up your story | Raghava KK

    TED · Sep 9, 2011 · 71.2K views

12. 15:12

    Lee Cronin: Making matter come alive

    TED · Sep 9, 2011 · 79.3K views

13. 14:01

    Sarah Kaminsky: My father the forger

    TED · Sep 7, 2011 · 52.4K views

14. 16:10

    Edward Tenner: Unintended consequences

    TED · Sep 6, 2011 · 45.6K views

15. 13:19

    Joan Halifax: Compassion and the true meaning of empathy

    TED · Sep 2, 2011 · 313.5K views

16. 6:05

    Skylar Tibbits: Can we make things that make themselves?

    TED · Sep 1, 2011 · 76.3K views

17. 10:52

    Julia Bacha: Pay attention to nonviolence

    TED · Sep 1, 2011 · 55.1K views

18. 17:02

    Svante Pääbo: DNA clues to our inner neanderthal

    TED · Aug 30, 2011 · 152.6K views

19. 5:36

    Beware conflicts of interest | Dan Ariely

    TED · Aug 29, 2011 · 149.5K views

20. 5:07

    The magic of truth and lies (and iPods) | Marco Tempest

    TED · Aug 12, 2011 · 995.9K views