Poorer people often live in areas with more pollution and crime, that is no surprise, but pollution is relative in 2018. American air is incredibly clean, (1) so clean epidemiologists and activists have tried to define harmful smog all the way down to 2.5 μm (microns) in diameter in hopes of showing air quality is still a worry. And they have begun to consider noise the same as smog for harm, along with lots of other things.
Poorer people often live in areas with more pollution and crime, that is no surprise, but pollution is relative in 2018. American air is incredibly clean, (1) so clean epidemiologists and activists have tried to define harmful smog all the way down to 2.5 μm (microns) in diameter in hopes of showing air quality is still a worry. And they have begun to consider noise the same as smog for harm, along with lots of other things.