Bill Stone: Journey to the center of the Earth ... and beyond!

http://www.ted.com Bill Stone, a maverick cave explorer who has plumbed Earths deepest abysses, discusses his efforts t

George Ayittey: Cheetahs vs. Hippos for Africa's future

http://www.ted.com Ghanaian economist George Ayittey unleashes a torrent of controlled anger toward corrupt leaders in A

Jeff Skoll: Making movies that make change

http://www.ted.com Film producer Jeff Skoll (An Inconvenient Truth) talks about his film company, Participant Production

Philippe Starck: Why design?

http://www.ted.com Designer Philippe Starck -- with no pretty slides to show -- spends 18 minutes reaching for the very

Daniel Goleman: Why arent we all Good Samaritans?

www.ted.com Daniel Goleman, author of Emotional Intelligence, asks why we aren't more compassionate more of the time.

Bill Strickland: Rebuilding America, one slide show at a time

http://www.ted.com Bill Strickland tells a quiet and astonishing tale of redemption through arts, music, and unlikely

Howard Rheingold: Way-new collaboration

http://www.ted.com Howard Rheingold talks about the coming world of collaboration, participatory media and collective a

Nicholas Negroponte: From 1984, 4 predictions about the fut

http://www.ted.com Speaking at the first TED Conference in 1984, Nicholas Negroponte waxes prophetic on the converging

Jan Chipchase: Our cell phones, ourselves

http://www.ted.com Nokia researcher Jan Chipchase's investigation into the ways we interact with technology has led him

Keith Bellows: Celebrating the camel

http://www.ted.com Keith Bellows gleefully outlines the engineering marvels of the camel, a vital creature he calls "the