Mexico City’s air is getting cleaner, but ozone levels near the ground aren’t decreasing as fast as expected. Climate change is partly to blame.

Across several states, a quiet chemical industry campaign is making it harder to hold air polluters accountable.

The number of victims receiving aid has tripled in recent years, a Post analysis finds, as the illness’s toll becomes more apparent.

Tackling air pollution and climate change together could save lives and boost economies, UN reports show.

The PA Department of Environmental Protection says between 2023 and August 2026, Shell’s ethane cracker, exceeded limits on visible emissions set by its state-issued air permit more than two dozen times.