Here's a link TFA... http://www.scientificamerican.com/article/brain-cells-into-t...
@the_af: In the future it'd be most courteous of you to provide links to that which you cite; it spares everyone from having to google it ;)
@the_af: In the future it'd be most courteous of you to provide links to that which you cite; it spares everyone from having to google it ;)
No need to google it at all.