"A coalition of 20 states, several cities and a county are suing the Environmental Protection Agency (EPA) over a regulation that undermines the justification for certain clean air standards. The states sued over changes to the Mercury and Air Toxics Standards (MATS) rule, which regulates pollution from power plants."

"Transit agencies ask Congress for relief as commuters return to their cars and fare revenues tank. Meanwhile, driving direction requests—and carbon emissions—soar."

"A new study offers fresh evidence of a connection between dirty air and COVID-19 deaths, while suggesting that a 4-month-old EPA civil enforcement freeze has made the situation worse."

"Researchers link air pollution from burning off excess natural gas to preterm births for babies; with the most pronounced impacts among Hispanic families."

"Fifteen states and the city of Washington, D.C., on Tuesday announced an agreement that aims to make all new truck and bus sales emission-free by 2050."

"The Environmental Protection Agency is proposing to retain Obama-era air quality limits for ozone after rushing through a review of the standards that were set in 2015."

"A recent study found that stronger pollution regulations could save more than 143,000 lives over a decade."

"A massive plume of dust whipped up from the Sahara desert will hover over the U.S. Southeast this weekend, forecasters say, shrouding the region in a brown haze and raising more health concerns in states where the coronavirus crisis is worsening."