What is your favorite TED talk?

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http://www.unix.com – The TED talk (Technology Entertainment Design) non-profit initiative started many years ago as a platform for sharing knowledge to a wide audience. Since 2006 the talks are available online under a Creative Commons license. There are now 1000+ TED talks from a wide range of subjects and I wanted to highlight a few of them given the particular importance of the subject matter:http://www.youtube.com/watch?v=vpTHi7O66pI: Alan Savory on how public opinion can play a role in reversing the damage that desertification is doing to the earth's climate and people dependent on food aid now. http://www.yo (HowTos)