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.

Mercury is a heavy metal used in illegal gold mining, a violent, highly profitable illicit activity that is currently booming.

Two smoke-damage bills awaiting the governor’s signature address a longstanding issue brought to the fore by the Los Angeles County fires: when is it safe for wildfire survivors to move back into their homes?

Kristi West, a lead researcher from the University of Hawaiʻi at Mānoa's Health and Stranding Lab, found that 23% of the pilot whales she examined over a 13-year period had plastic in their stomachs.

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

A Trump-appointed judge also said Americans have no “constitutional right to truthful information” during a public health crisis.

Eider ducks and bald eagles that nest in and around Harpswell have high levels of PFAS chemicals following an August 2024 spill of firefighting foam on the former Brunswick Naval Air Station.

Since China banned the import of plastic waste in 2018, plastic pollution has had a growing impact on the people and ecosystems of Latin America.

Experts say President Trump’s rollback of climate policy is leaving consumers more vulnerable to price shocks and pollution.

Appeals court dismisses lawsuit from Jackson residents claiming that tainted drinking water violated their rights.

From rare bacteria to ‘forever chemicals’, a series of cases of violations or alleged pollution has prompted alarm

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.

From the water crisis in Jackson, Mississippi, to sewage problems in Alabama, stalled projects could get new life after federal court rulings.

The Mediterranean coast faces rising microplastic contamination as researchers trace pollution to waste processing, runoff, and record rainfall.

Cleveland-Cliffs got $500M for a big green-steel push. Under Trump, the firm is “rescoping” to work that perpetuates coal use and will boost local pollution.

A Trump administration proposal to eliminate a federal requirement giving the public notice and an opportunity to comment on air-pollution permits could reduce the scrutiny of diesel generators backing up data centers, advocates warn.

The ‘Bury the Barrels’ campaign urges the U.S. Department of Energy to comply with a state effort to increase New Mexico nuclear waste in repository.

New EU packaging regulations will come into force this week which set EU-wide limits on PFAS, or "forever chemicals", in food-contact packaging and set targets to cut the bloc's waste, especially of oil-derived plastics.