China faces 'population rebound'   BEIJING — China's top family
planning body has warned that the world's most populous country
could face a "population rebound" because the newly rich are
ignoring population control laws and because of early marriages
in rural areas, state media said Monday.  China's family
planning policy -- implemented in the late 1970s -- limits most
urban couples to one child and rural families to two to control
population growth and conserve natural resources.  But a rise in
incomes means some newly rich can afford to break the rules and
pay any resulting fines, while the traditional desire for sons
means the rules also are broken in the countryside.  China's
Constitution says men may marry at 22 and women at 20, with late
marriages and later childbearing encouraged to keep population
growth down.  "Early marriages are still prevailing in some
parts of the country, especially in rural areas, which goes
against the family planning policy," Xinhua News Agency quoted
commission director Zh