Natlie WolchoverLife's Little Mysteries Staff Writer Latest articles by Natlie Wolchover How Do You Count 7 Billion People? By Natlie Wolchover published 19 August 11 The UN compiles a mind-boggling array of demographic, health and census data in order to estimate the world population. Human Behavior Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1Earth's seasons vary wildly, even at the same latitude, new research finds218,000 years ago, ice age humans built dwellings out of mammoth bones in Ukraine3Tiny implant 'speaks' to the brain with LED light4Cats meow more at men to get their attention, study suggests5See the 100,000th photo of Mars taken by NASA's groundbreaking Red Planet orbiter
How Do You Count 7 Billion People? By Natlie Wolchover published 19 August 11 The UN compiles a mind-boggling array of demographic, health and census data in order to estimate the world population.