1. Kevin Bales at TED2010: How to combat modern slavery - Watch video
2. Philip K. Howard at TED2010: Four ways to fix a broken legal system - Watch video
3. Nalini Nadkarni at TED2010: Life science in prison - Watch video
4. Michael Sandel at TED2010: The lost art of democratic debate - Watch video
5. Awraham Soetendorp at TEDxAmsterdam 2009: Compassion - Watch video
6. Sunitha Krishnan at TEDIndia: Fighting sex slavery - Watch video
7. Shaffi Mather at TEDIndia: A new way to fight corruption - Watch video
8. Sigall Bell at Gel Health 2009: Patients who suffer medical errors get a... - Watch video
9. Dan Ford at Gel Health 2009: Dan became interested in patient advocacy... - Watch video
10. Rinku Sen at PopTech 2009: Locating Justice - Watch video
11. Paul van Zyl at PopTech 2009: Legacy of torture - Watch video
12. Misha Glenny at TEDGlobal 2009: Misha Glenny investigates global crime networks - Watch video
13. Emmanuel Jal at TEDGlobal 2009: The music of a war child - Watch video
14. Evgeny Morozov at TEDGlobal 2009: How the Net aids dictatorships - Watch video
15. Laura Archer at ideaCity 2009: Kidnapped in Darfur - Watch video
16. Jerry Miller and Barry Scheck at Gel 2009: Thousands of innocent Americans are in prison... - Watch video
17. Sophal Ear at TED2009: Escaping the Khmer Rouge - Watch video
18. Erik Hersman at TED2009: Erik Hersman on reporting crisis via texting - Watch video
19. Ezra Levant at ideaCity 2008: Co-founder of the Western Standard magazine,... - Watch video
20. Paul Collier at TED2008: 4 ways to improve the lives of the "bottom billion" - Watch video
21. Samantha Power at TED2008: Shaking hands with the devil - Watch video
22. Philip Zimbardo at TED2008: How ordinary people become monsters ... or heroes - Watch video
23. George Ayittey at TEDGlobal 2007: Cheetahs vs. Hippos for Africa's future - Watch video
24. Andrew Mwenda at TEDGlobal 2007: Let's take a new look at African aid - Watch video
25. Ory Okolloh at TEDGlobal 2007: The making of an African activist - Watch video
26. Bill Clinton at TED2007: TED Prize wish: Let's build a health care system in Rwanda - Watch video
27. Steven Pinker at TED2007: A brief history of violence - Watch video
28. Samantha Nutt at ideaCity 2006: Samantha Nutt, a medical doctor and... - Watch video
29. William Sampson at ideaCity 2006: William Sampson denounces the use of torture... - Watch video
30. Peter Gabriel at TED2006: Fighting injustice with a videocamera - Watch video
31. Peter Donnelly at TEDGlobal 2005: How juries are fooled by statistics - Watch video