Flooding in the village of Newtok, Alaska, after a storm in 2005. | Stanley Tom, Newtok Traditional Council

What 11 Billion People Mean for Climate Change

By the end of this century, Earth may be home to 11 billion people, the United Nations has estimated, earlier than previously expected.

November 22, 2013
11:00 AM EST
Commuters crowd a hall of a train station in downtown New Delhi. According to the Indian Railways, the rail system in India transports over 13 million passengers every day. | ROBERTO SCHMIDT/AFP/Getty Images
Consumers peruse the shops on Oxford Street on the penultimate Saturday before Christmas Day on December 17, 2011 in London, England. | Oli Scarff/Getty Images
Estimated dates of coming climate extremes under the RCP8.5 model, which projects today's levels of carbon dioxide emissions continuing through 2100. | Camilo Mora et al./Nature
A new housing subdivision outside of Orlando, Florida, is seen in an aerial photograph from 2007. | JEFF HAYNES/AFP/Getty Images
An irrigation system sprays water on a cornfield. | Kansas State University Photo Services