Nov 14
New York City at the turn of the 20th century was a pretty pungent place. Piles of garbage, millions of people cooking food, and about 2.5 million pounds of horse manure emptied into the streets per day will do that to a city. And don’t forget the 420,000 gallons of horse urine flowing through the streets each week. But some forward-thinking New Yorkers had an idea to clean up the city: establish a citywide central vacuum system.
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