Air

"Guardian investigation finds 98% of Europeans breathing highly damaging polluted air linked to 400,000 deaths a year".

"In a long-anticipated move, EPA is poised to target the Trump-era rollback of a venerable industrial air pollution policy."

"A crypto-mining company in Pennsylvania is seeking to burn tires to produce bitcoin, prompting an outcry from residents and environmental groups."

"A newly identified particle in smoke, dark brown carbon, can warm the atmosphere by absorbing sunlight."

"Scientists and educators are searching for ways to improve air quality in the nation’s often dilapidated school buildings."

"On a sunny afternoon in a cluttered music room at East High in Denver, two sophomores practiced violin while their music teacher, Keith Oxman, labored over a desk in an adjoining office.

The ceiling fans were off to prevent the sheet music from scattering. The windows were sealed shut. East High is Denver’s largest high school and among the oldest, and there is no modern ventilation system.

"On Thursday, NASA released the first data maps from its new instrument launched to space earlier this year, which now is successfully transmitting information about major air pollutants over North America."

"What do you get when you combine record-breaking heat, wildfire smoke and sunlight? Ground-level ozone in amounts high enough to cause health problems in both Baton Rouge and New Orleans on Friday and Saturday, according to the federal/state Air Quality Index."

"EPA is restarting review of a high-stakes decision on ground-level ozone standards in a step that short-circuits the prospects for any imminent action to tighten limits on the lung-damaging pollutant."