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Facts to know about world population

Photos Logo Photos | Slide 1 of 13: Indian artist Gurpreet Singh poses with a handmade globe and silhouettes of residents in Amritsar on July 10, 2012, on the eve of World Population Day. AFP PHOTO /NARINDER NANU (Photo credit should read NARINDER NANU/AFP/GettyImages)

World Population Day, observed annually on July 11, was conceived in 1989 by the then-Governing Council of the United Nations Development Programme with an aim to focus on urgent population issues. 

© Narinder Nanu/AFP/Getty Images
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