World Population to Hit 7 Billion This Year, 10 Billion by 2100

With 2.3 billion more people arriving to the globe in the next 40 years, the battle for resources is just beginning.

The globe's seven billionth citizen will be born before January 2012, according to new estimates from the United Nations. It was only 1999 when the earth's population hit 6 billion, and by 2050 we're expected to add 2.3 billion more. Despite all the financial hardships many currently face, proud parents abound. But their joy might spell trouble for the rest of us.

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