News Life Doubled gene means extra smarts Change during human evolution could have led to bigger brains Share this:FacebookTwitterPocketRedditPrint By Tina Hesman Saey October 13, 2011 at 7:30 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe