Viewfinder: Mexico City Declares an Environmental Alert as Smog Reaches Dangerous Levels
Two women wear face masks on May 16th, 2019, in Mexico City, Mexico.
Air Quality
Unhealthy Air and Hazy Skies: How Pollution Is Affecting National Parks
The National Parks Conservation Association's new report recommends mitigating pollution and transitioning to clean energy, with an emphasis on fair solutions.
A Chemical Fire in Texas Has Been Extinguished, but Questions Over Safety Linger
Public officials and Texas' environmental regulator maintain that the chemicals released in the fire did not pose a health risk.
Though Wildfire Smoke Threatens Farmworkers' Health, Volunteers Are Being Blocked From Distributing Protective Masks
Amid hazardous air conditions in California, farm management is turning away volunteers attempting to hand out masks to farmworkers.
California's Fires Are Affecting Cities' Air Quality Dozens of Miles Away
One idea for a long-term fix: Communities could designate clean air centers where residents can spend time in filtered air for free.
The California Wildfires Could Continue Until Christmas
Without rain, high temperatures will keep the smoke coming—and could spur new fire growth.
The Hazards of Breathing Wildfire Smoke
A conversation with an atmospheric chemist about the health risks posed to Californians by smoke from the Thomas Fire and Creek Fire.
This Week in Report Cards
A round-up of news and research on rankings mostly pertaining to America.