A new study says that air pollution — specifically, the kind caused by car exhaust — may be a significant cause of rising rates of autism in children.

Using scented products indoors changes the chemistry of the air, producing as much air pollution as car exhaust does outside, according to a new study. Researchers say that breathing in these ...

A code orange alert has been issued for the Lehigh Valley and eastern Pennsylvania on Monday due to elevated ozone levels as ...

A Code Orange Air Quality Action Day has been issued for parts of the Pittsburgh area on Thursday.

The Pennsylvania Department of Environmental Protection has declared a Code Orange Air Quality Action Day for ozone for Monday in Lehigh and Northampton counties. On Monday a large area of high ...

Trump signed measures Thursday revoking waivers for the state's mandates that clean up car and truck exhaust and ramp up ...

Trump signed measures on Thursday revoking waivers for the state’s mandates that clean up car and truck exhaust and ramp up ...

If you've ever wondered why US diesel vehicles have particulate filters but regular gas cars do not, there's an odd reasoning behind the fact.

A Code Orange Air Quality alert will be in effect for Philly, Bucks, Montgomery, Chester and Delaware Counties2, 2025.

Researchers say air pollution in Toronto is a complex problem that goes way beyond car exhaust fumes. A new study could make it clear what we’re breathing in - and where it's coming from.