World population to hit 7 billion in 2011
Thursday, July 28, 2011 - 18:30
in Paleontology & Archaeology
CAMBRIDGE, Mass., July 28 (UPI) -- World population will hit 7 billion this year and then add 2.3 billion more -- as many people as lived on the planet in 1950 -- by 2050, U.S. researchers say.