Motor vehicles are the single largest source of air pollution in New Hampshire, responsible for roughly half of the emissions that form ground-level ozone, which harms human health.

Independent research shows that wood smoke contains tiny particles - called PM2.5 - which can work their way into the ...

Siltrax, a leader in high-performance electrochemical innovation, has announced a definitive commercial milestone: the G-100 Proton Exchange Membrane (PEM) Fuel Cell Stack has officially attained TÜV ...

Effective dust control supports optimal working conditions, as well as compliance with dust emissions standards and ...

It’s a crisp winter morning in Phoenix. The sky is clear, the sun is shining and it finally is below 100 degrees. As you walk, a pickup truck sits idling at the curb, its tailpipe coughing a thick ...

Emissions tests in Bexar County will cost $18.50, according to DPS. Credit: Shutterstock / Khairil Azhar Junos Gov. Greg Abbott may have liberated San Antonio drivers from car safety inspections, but ...

Depending on where you live in the United States, emissions testing of old cars may or may not even be a thing. There are 28 states where at least some (though not necessarily all) are required to ...

New Hampshire drivers: Don’t scrape off that windshield sticker just yet. A manufacturer of vehicle emissions testing equipment sued the state Monday, asking a federal judge to block the repeal of New ...