WASHINGTON ( CNN ) -- Global population to reach 7 billion in 10 years , research institute projects . Most growth is seen in developing and poor nations , study finds . Uganda 's population expected to almost triple by 2020 . India expected to replace China as most populous country .
Global population to reach 7 billion in 10 years , research institute projects . Most growth is seen in developing and poor nations , study finds . Uganda 's population expected to almost triple by 2020 . India expected to replace China as most populous country .