Ideas Worth Spreading

I have been following TED.com (stands for technology, entertainment, and design) for several years now. TED offers hundreds of videotaped talks on every topic imaginable. Click on the science category and you'll find experts and entrepreneurs explaining everything from mathematics to monkey behavior to music. New talks appear weekly. Check it out. It's awesome!! www.ted.com 

Here are a couple I found interesting.
Bacteria- http://www.ted.com/talks/bonnie_bassler_on_how_bacteria_communicate.html

Aortic engineering-http://www.ted.com/talks/tal_golesworthy_how_i_repaired_my_own_heart.html