Federal regulators ruled Monday that pollution from Mexico , not local sources, is why Phoenix fails air quality standards.

Add Yahoo as a preferred source to see more of our stories on Google. A new study has identified Texas as the likely source for nurdle plastic pollution on Texas and Mexico beaches. The study was led ...

Mexico City declared an air pollution alert for the second straight day Wednesday, urging people to stay indoors, canceling school and moving the semi-finals of the first-division football league to ...

A new report shows air pollution threatens the majority of the world’s population, while information gaps increase the risks.

The EPA granted the Phoenix area an exemption from stricter air quality regulations, citing international emissions from Asia and Mexico that are outside local control.

A new study has identified Texas as the likely source for nurdle plastic pollution on Texas and Mexico beaches. The study was led by a University of Texas Marine Science Institute graduate student, ...