Bill Hammack:
How a quartz watch works
Another great video from the engineer guy.
Loading...Neil deGrasse Tyson tells a story about how to get rid of stereotypes.
Guy Kawasaki argues that the genius of Steve Jobs was not to listen to the marketplace.
James Randi talks about the situation of alternative treatments in Norway.
Paul Root Wolpe asks the question if it is time to set up rules for bio-engineering at TEDxPeachtree.
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