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.

Summer heat is becoming more deadly for the elderly in South Texas with record-breaking temperatures and rising costs for electricity.

Are four years of pro-environment policies about to come to an end?

Scientists and investors are restoring a 23-square-mile tract of peatland in North Carolina to help curb climate-warming emissions and restore native habitat.

It's a grim moment for what was a booming industry in the state, but EV makers are still forging ahead.

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?

This summer at Gas Works Park, a new sound to Lake Union has brought a fresh conversation to a decades-old problem: contamination from the land’s past life as a coal-oil plant.

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.

Scientific evidence has never been stronger. Why aren’t more people making the link?

NextEra Energy is one of three U.S. energy companies to win backing from the Department of Energy to revive shut-down nuclear plants to meet soaring power demand.

In an era of heavy rain, a transit system with 47,000 openings is bound to leak.

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.

Unlike ​hard corals supported by rigid calcium carbonate skeletons, soft corals rely on internal fluid pressure to keep upright.