DENVER (CBS4) -- Two out-of-state diesel repair facilities were sentenced this month, and a third will be next month, for conspiring with a Colorado shop to illegally alter the emission controls on ...

A Colorado truck repair shop that disabled emissions control equipment on hundreds of heavy duty trucks' diesel engines was recently penalized and its owner sentenced to a year behind bars. In April ...

A new study reveals that the very air we breathe may be killing us. Veuer’s Tony Spitz has the details. As part of a national push to reduce toxic vehicle exhaust — an effort that pits public health ...