Article on what biological influences affect free will

I just read an interesting article in the New York Times, on what biological influences affect free will, written by David P. Barash, an evolutionary biologist:

Who’s in Charge Inside Your Head?

What can parasitic flukes and zombie bees tell us about love and free will? A lot.

http://www.nytimes.com/2012/10/07/opinion/sunday/whos-in-charge-inside-your-head.html?smid=pl-share