Two women wear face masks on May 16th, 2019, in Mexico City, Mexico.
The National Parks Conservation Association's new report recommends mitigating pollution and transitioning to clean energy, with an emphasis on fair solutions.
Public officials and Texas' environmental regulator maintain that the chemicals released in the fire did not pose a health risk.
Amid hazardous air conditions in California, farm management is turning away volunteers attempting to hand out masks to farmworkers.
One idea for a long-term fix: Communities could designate clean air centers where residents can spend time in filtered air for free.