Sheril KirshenbaumThis week, the world’s human #population is expected to reach 8B. About 109B people have lived and died. Each grain of sand represents 10M.
Spectacular #data visualization of human life on Earth by Max Roser #science #SharedPlanet
Den Spier 
@Sheril this is a beautiful illustration, but something oversimplified, if not exactly misleading. The number of people born and especially, as fixed nature of an hourglass suggests, the number of people dying are not constant.