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

1. 15:00

   Boyd Varty: What I learned from Nelson Mandela

   TED · Dec 9, 2013 · 240.1K views

2. 14:18

   Enrique Peñalosa: Why buses represent democracy in action

   TED · Dec 6, 2013 · 149.2K views

3. 4:29

   My underwater robot | David Lang

   TED · Dec 5, 2013 · 260.7K views

4. 6:00

   Let's try emotional correctness | Sally Kohn

   TED · Dec 4, 2013 · 199.4K views

5. 13:24

   Geraldine Hamilton: Body parts on a chip

   TED · Dec 3, 2013 · 349.4K views

6. 10:04

   Toby Eccles: Invest in social change

   TED · Dec 2, 2013 · 80.7K views

7. 14:31

   Want to be happy? Be grateful | David Steindl-Rast

   TED · Nov 27, 2013 · 3.8M views

8. 13:32

   What is so special about the human brain? | Suzana Herculano-Houzel

   TED · Nov 26, 2013 · 837.6K views

9. 18:12

   Jared Diamond: How societies can grow old better

   TED · Nov 25, 2013 · 132.4K views

10. 9:30

    Peter Doolittle: How your "working memory" makes sense of the world

    TED · Nov 22, 2013 · 810.4K views

11. 9:25

    Andreas Raptopoulos: No roads? There's a drone for that

    TED · Nov 21, 2013 · 156.8K views

12. 10:22

    Henry Evans and Chad Jenkins: Meet the robots for humanity

    TED · Nov 20, 2013 · 182.8K views

13. 13:51

    Greg Asner: Ecology from the air

    TED · Nov 19, 2013 · 87.7K views

14. 13:31

    Lian Pin Koh: A drone's-eye view of conservation

    TED · Nov 18, 2013 · 90.7K views

15. 7:19

    Jane McGonigal: Massively multi-player... thumb-wrestling?

    TED · Nov 15, 2013 · 160.5K views

16. 9:02

    Mohamed Ali: The link between unemployment and terrorism

    TED · Nov 14, 2013 · 97.3K views

17. 12:57

    Stefan Larsson: What doctors can learn from each other

    TED · Nov 14, 2013 · 58K views

18. 11:41

    Chris Downey: Design with the blind in mind

    TED · Nov 12, 2013 · 123K views

19. 16:24

    Dambisa Moyo: Is China the new idol for emerging economies?

    TED · Nov 11, 2013 · 595.8K views

20. 6:25

    The magic of Fibonacci numbers | Arthur Benjamin | TED

    TED · Nov 8, 2013 · 6.2M views