Interesting TED talks

[GZap]

If you enjoy the TED talks, post anything of interest here.

http://www.youtube.com/watch?v=vs41JrnGaxc&feature=channel

http://www.youtube.com/watch?v=NHopJHSlVo4

and an old favourite - http://www.youtube.com/watch?v=NhmZBMuZ6vE