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

1. 18:12

   Sir Martin Rees: Earth in its final century?

   TED · Apr 15, 2008 · 871.6K views

2. 5:03

   Stewart Brand: Why squatter cities are a good thing

   TED · Apr 15, 2008 · 41.9K views

3. 19:57

   Robert Wright: The logic of non-zero-sum progress

   TED · Apr 15, 2008 · 96.1K views

4. 14:12

   Why people believe weird things | Michael Shermer

   TED · Apr 15, 2008 · 3.1M views

5. 16:16

   Jan Chipchase: The anthropology of mobile phones

   TED · Apr 14, 2008 · 37.8K views

6. 19:41

   Charles Leadbeater: The era of open innovation

   TED · Apr 14, 2008 · 129.9K views

7. 6:14

   Wii remote hacks | Johnny Lee

   TED · Apr 11, 2008 · 1.8M views

8. 10:13

   Questioning the universe | Stephen Hawking

   TED · Apr 4, 2008 · 7M views

9. 17:51

   The call to learn | Clifford Stoll

   TED · Mar 27, 2008 · 1.3M views

10. 7:22

    Roy Gould: WorldWide Telescope

    TED · Feb 29, 2008 · 91.9K views

11. 6:54

    Joseph Lekuton: A parable for Kenya

    TED · Feb 29, 2008 · 23.9K views

12. 17:01

    Raspyni Brothers: Welcome to Vaudeville 2.0

    TED · Feb 29, 2008 · 26.8K views

13. 6:21

    Jill Sobule & Julia Sweeney: The Jill & Julia Show

    TED · Feb 29, 2008 · 30K views

14. 17:43

    Moshe Safdie: What makes a building unique?

    TED · Feb 19, 2008 · 51.3K views

15. 8:33

    George Dyson: Let's take a nuclear-powered rocket to Saturn

    TED · Feb 19, 2008 · 85.1K views

16. 19:31

    Howard Rheingold: Way-new collaboration

    TED · Feb 12, 2008 · 55.4K views

17. 17:33

    Michael Pollan: A plant's-eye view

    TED · Feb 7, 2008 · 218.1K views

18. 15:43

    Jaime Lerner: Sing a song of sustainable cities

    TED · Feb 7, 2008 · 64.1K views

19. 13:40

    Robin Chase: Getting cars off the road and data into the skies

    TED · Feb 1, 2008 · 19.1K views

20. 12:50

    Chris Anderson (TED): A vision for TED

    TED · Feb 1, 2008 · 38.7K views