Q: Many years ago, California began exempting older cars from having to complete a smog check to renew the vehicle registration for the year, Roy Saldin of Moreno Valley said.

In an about-face, the agency would instead approve five state "good neighbor" plans, thereby potentially skirting new pollution control requirements.

Add Yahoo as a preferred source to see more of our stories on Google. Smog hangs in the air as the sun sets after a hot day in the Los Angeles Basin on Wednesday, Oct. 4, 2023. (Luis Sinco / Los ...

LOS ANGELES (KABC) -- The Los Angeles metropolitan area has more seasons than winter, spring, summer and fall -- we have a fifth season of sorts that traditionally begins around this time of year: ...

Smog affects many major cities around the world and can cause health problems for those breathing it in. To highlight this issue, Dutch artist Daan Roosegaarde is building what he calls the world's ...

Every winter, Pakistan’s air quality drops to dangerous levels, blanketing major cities under thick, toxic smog. According to ...