Today we hit the 7 billion people mark. Too much, not enough, or just right? Discuss.
http://today.msnbc.msn.com/id/45100...on-hits-billion/?ocid=ansmsnbc11#.Tq8_LnKyBx0
http://today.msnbc.msn.com/id/45100...on-hits-billion/?ocid=ansmsnbc11#.Tq8_LnKyBx0