*Even low levels of air pollution can damage health
, study finds.*
Don't panic, though — a tiny concentration of air pollution will
normally do a tiny amount of harm, which is hard to measure without a
sample of millions.
In the absence of any standard of perfection (keep air pollution under
level L and it will do exactly zero damage), how should we decide how
much to work to reduce air pollution? It's a matter of how the danger
from air pollution stacks up against all the other dangers we face.
Suppose we decide to spend a billion dollars on public health, which
allocation of funds would we rationally expect to make the biggest
improvement? Part of that plan could be spending to reduce air
pollution.