I once had the priviledge to go to the TED conference (thanks to Jules) and saw the best speech i had ever seen by Dean Kamen and his quest to fix many of the problems of the world using technology.
Now TED is broadcasting their videos on their site. I recently watched another great speech by Majora Carter who advocates environmental justice through “green” community developments in the South Bronx. Her project is the Sustainable South Bronx and her speech is here and below – it’s worth a viewing.
As for the Kamen speech, i have the DVD and i’ll post it as soon as i get it up.