The concept behind David Owen's
Green Metropolis is simple: the most environmentally sound areas are not
the suburbs where people work hard to be "
green," but the
massive cities where there is no choice but to be. Despite seeming counter intuitive, the reasoning is persuasive. Cities force people to
make do with less stuff and less space. Since
parking is generally a tragic experience, many will
do away with their cars and rely on
public transportation,
biking, or
walking. Apartments are
smaller, therefore requiring less energy to live in. So on and so forth.
One way he gets to this conclusion is by using all the
stats that show the difference in pollution between cities and suburbs. Let's say
Generic City releases
X amount of pollution which is considerably higher than the Y amount of pollution that Generic Suburb releases. Normally people would look at that and say, "eww gross,
Generic City is disgusting." However, Owen uses pollution
per capita to make his point. So if there are a million people in Generic City and 250,000 in Generic Suburb, it turns out that the suburbanities produce more pollution per person than the urbanites. Even if Generic City is an overall toxic place to live,
each person is responsible for only a tiny amount of that toxic environment which makes them "greener" than your average home owner with the
compost pile and
hybrid car packed with reusable grocery bags. Vindication! You hear that
hazy brown air,
pea soup looking water supply, and cement covered land? City folk are good for the environment. In your face
sustainable landscaped homes! Eat that
backyard farmers!
On paper this is fine. In reality there is an
obvious problem.
Small amounts of pollution multiplied by a million people on a small footprint (not the
carbon type) often creates an extremely polluted environment. In the end it doesn't matter how little each person contributes to a cesspool... it's still a cesspool.
This is all, of course, a simplification. His argument is far more detailed than what I've written above. But instead of being persuaded, I realized instead the beautifully tricky nature of proving anything with statistics.
Statistics are the used car salesmen of science. They might be telling the truth, but the truth they tell is a
selective and sidestepping sort of truth. The type of truth that tells you "this thing runs like a beauty" when the tires are flat. I'm not saying that city living isn't greener, his points make sense on that. I'm just saying it's a little hard to get too smug about it when I have to purify my tap water and
step over trash on every street.
posted by jw
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