BBC

The World at 7 Billion: Where Do You Fit In?

By the time Christopher Columbus died, there were only 500 million people on Earth. By 2050, the U.N. expects that number to swell to 9.3 billion. That said, I am the also the 4,985,259,234th person to be alive on this planet.

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Aging America: Percentage of Children in U.S. Population Hits Record Low

Is America following the footsteps of Japan, notorious for its aging and declining population?

(Qamar Sibtain/India Today Group/Getty Images)

Hot, Flat and Crowded: Global Population to Reach 7 Billion in 2011

Sometime late this year, our planet will welcome its 7 billionth person. Yes, that’s a lot of people. But, no, it’s not (necessarily) the end of the world.