New York's Futuristic Central Vacuum System That Never Was

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.… » 11/14/13 2:48pm 11/14/13 2:48pm