29 July 2011
Vol 333, Issue 6042

About The Cover

Cover image expansion

COVER New York City. The United States is the only currently developed country projected to rank among the 10 most populous countries in 2050. Unlike many developed countries, the U.S. has a fertility rate slightly greater than replacement level, which provides balanced growth of youngsters, working-age adults, and elderly dependents. For our global coverage of population, see the special section beginning on p. 538 and at Image: Mitchell Funk/Getty Images