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Humanity's Astounding Growth to 7 Billion People [Video]

There are many ways to tell the story of humanity’s explosive population growth over the last 200 years, which recently culminated (sort of) in the birth of the 7 billionth child. In their video, NPR chose a series of water-filled glasses that drip water out as they are filled. The exiting drips show the births, and the fresh water entering the glasses are the births.

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It’s an interesting and surprising look at the spread of ours species. It’s also guaranteed to make you have to pee.

(via BuzzFeed)

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