As the Environmental Protection Agency reassesses a Trump administration decision not to strengthen a key air quality standard, it says it has found evidence to support tightening it.
Barbara Szalai wasn’t worried about moving upriver from a coal plant. Then sticky black dust started coating her home, and the headaches and allergies began.
A new administration could renew the U.S. commitment to the Paris climate agreement, strengthen air pollution standards, and more. But that will take time.
