The World Population at 7 Billion

"The world’s population will shortly reach 7 billion. The United Nations estimates the world will reach this milestone on October 31, 2011. The U.S. Census Bureau estimates the world population will pass 7 billion on March 12, 2012 (see graph; for a link to Census Bureau’s estimates of today’s population, as well as annual midyear estimates from 1950 to 2050.