What is your favorite TED talk?

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:

• How to green the world's deserts and reverse climate change | Allan Savory - YouTube 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.youtube.com/watch?v=ZHOyfyGwpes: Amory Lovins on how the energy crisis will be solved by private enterprise and innovation without new regulation
• Ernesto Sirolli: Want to help someone? Shut up and listen! - YouTube Ernesto Sirolli on how private enterprise has helped the developed nations prosper and how it can do the same for developing nations

I must have seen well over a hundred TED talks and the three above stand out as being the must-see. What are your favorite TED talks?

I don't have a favourite as such. But one talk that comes to mind is

Four principles for the open world - Don Tapscott - YouTube Don Tapscott: Four principles for the open world (2012)

Here's another one
http://www.ted.com/talks/apollo\_robbins\_the\_art\_of_misdirection.html: Apollo Robbins: The Art of misdirection.

I like anyone which is good.

Here is another one pertaining to open source:
http://www.ted.com/talks/beth\_noveck\_demand\_a\_more\_open\_source_government.html