Emissions testing laws are a crucial component in the fight against air pollution and climate change, yet these regulations vary significantly across the United States. Understanding these differences ...

It's a question you may find yourself asking in matters of government. "Is it really a good thing or isn't it," said JJ Carpenter of Susquehanna County. This one involves your car -- and that added ...

Across the United States, the rules for checking tailpipe pollution are quietly shifting, even as climate targets grow more ambitious and electric vehicles grab headlines. States are carving out ...

A new state law could make it harder to get an emissions test at a state inspection shop in your neighborhood. NBC 5 Investigates has obtained new data from the Texas Commission on Environmental ...

Earlier this month, the EPA repealed a key finding that greenhouse gases harm human health and can be regulated under the ...