"As thick smoke from Canadian wildfires coated Chicago and the surrounding areas Tuesday, weather officials warned more bad air is expected Wednesday."

"A century ago, a well-ventilated building was considered good medicine. But by the time Covid-19 arrived, our buildings could barely breathe. How did that happen? And how do we let the fresh air back in?"

"Residents, lawyers, and environmental groups point to aging facilities and reluctant state regulators as reasons for the continued string of industrial fires."

"Call it a smoke front. That’s what it looks like from space on weather satellites and here on the ground on air quality monitors."

"Smoky days can double emergency hospital visits for asthma, which disproportionately affects Black and Latino children. In New York, the Bronx was especially hard hit."

"President Biden on Wednesday vetoed a congressional effort to overturn his administration’s rule governing pollution from heavy-duty vehicles including trucks and buses."

"“If we’re not outside, then we don’t make money,” said a pedicab driver in Central Park, echoing the view of many workers who pressed on despite warnings about harmful air quality".

"The release of cancer-causing benzene and other toxic gases from sites in Pennsylvania raises concerns about millions of other abandoned wells across the U.S."