The World Approaches 7 Billion

I routinely refer to the world's population as being 7 billion, but the UN Population Division estimates that we are still just short of that number, although we will reach it during 2011. In anticipation of this event, the National Geographic has created a series of videos exploring the "face" of seven billion, and reliving some of the important transitions that got us to this point. These resources are available on their website: http://ngm.nationalgeographic.com/7-billion