Did Cars Rescue Our Cities From Horses?
In the annals of transportation history persists a tale of how automobiles in the early 20th century helped cities conquer their waste problems. It’s a tidy story, so to speak, about dirty horses and clean cars and technological innovation. As typically told, it’s a lesson we can learn from today, now that cars are their own environmental disaster, and one that technology can no doubt solve. The story makes perfect sense to modern ears and noses: After all, Americans love their cars! And who’d want to walk through ankle-deep horse manure to buy a newspaper? There’s just one problem with the story. It’s wrong.
For a recent telling, you can turn to , the best-selling 2009 book by economist Steven D. Levitt and journalist Stephen J. Dubner. The authors describe how, in the late 19th century, the streets of fast-industrializing cities were congested with horses, each pulling a cart or a coach, one after the other, in some places three abreast. There were something like 200,000 horses in New York City alone, depositing manure at a rate of roughly 35 pounds per day,
