People walk along an overpass above the Cross Bronx Expressway, a notorious stretch of highway in New York City that is often choked with traffic and contributes to pollution and poor air quality on November 16th, 2021, in New York City. | Photo by Spencer Platt / Getty Images
For the first time in over a decade, the Environmental Protection Agency could toughen its standard for how much soot is allowed in the air we breathe. Today, it proposed lowering the regulatory threshold for fine particulate matter, commonly called soot. Still, some major health and environmental groups s...
