You may read more about Nina Jablonski here; there is information about the book she has written on this topic here. A transcript of an interview she gave to TED is here. The high-res version of her talk is here, and you may download the talk in other versions from this page.
The TED Global2009 Conference just finished, and there were some truly marvelous talks which I plan to feature as the videos are put up on the TED site. (Right now, the only one available is the talk by Gordon Brown which I featured earlier this week.)