Earth to hit 7 billion mark this year, straining developing regions

Earth will become home to 7 billion people later this year, and most of the planet's growth will affect the developing countries the hardest, straining those regions' limited resources, a Harvard University professor said Thursday.

Source: http://rss.cnn.com/~r/rss/cnn_health/~3/iS6sycsDnao/index.html

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