Environment
Your Neighborhood Significantly Influences the Air You Breathe
Levels of pollution exposure can vary dramatically within a city.
Los Angeles is famous for the layer of smog that's visible, miles away, from an approaching airplane. It looks like an even smear over the city, a low-lying haze that blankets every part of town equally. Smog, for the most part, is a regional phenomenon. But the fresh emissions that contribute to it, like pollution from the tailpipes of passing cars, permeate some neighborhoods much more than others.
Even if you live in a smog-covered city like Los Angeles, in other words, exactly where you live influences your direct exposure to pollution.