Velocity Alert: 1940: Photos of a sweaty square dance in the Oklahoma Dust Bowl

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THIS STORY IS ABOUT TO GO VIRAL

1940: Photos of a sweaty square dance in the Oklahoma Dust Bowl Letting loose, amidst hard times. How does Mashable know what's going viral? Mashable built a system called Velocity, which scours the social web, collecting lots and lots of data around how people are engaging with published articles. It then pulls all of that data back to Mashable, dumps it into our own predictive engine, and predicts which articles are about to go viral. Read more at Mashable.com ▶ Mashable, Inc. is a Delaware Corporation. P.O. Box 64 New York, NY, 10159-0064

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