The European Union plans to make its method for measuring the carbon dioxide emissions of plug-in hybrid vehicles more stringent, following criticism that test results can be up to four times lower ...

With vehicle emissions testing requirements for the Treasure Valley set to end later this month, residents will soon no longer have to get their vehicles tested. But what if you’ve already received a ...

NASHVILLE, Tenn. (WKRN) — For years residents of Davidson and the surrounding counties have had to do emissions testing of their cars before renewing their license plates. Starting January 14, 2022, ...

Many of us have received the notices for Air Quality Action Days in Indiana — the ones where the state tells us to limit our time and activities outdoors because the air is too unhealthy. Those are ...