Population of Earth hits 7 Billion: How that happened so quickly?(VIDEO)



The world now has seven billion people. A video from NPR helps us to visualize how that happened so quickly. Yeah, you already know how it happens, but this video uses visual metaphors to help us understand better why in only 200 years the earth has gone from 1 Billion to 7. It is crazy..given the fact that earth achieved to hit 1 Billion at 1804 and then....well....the rest is history..Check the smart video:

as presented on neatorama.com


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