A new California bill aims to ease smog rules for classic cars, with Jay Leno backing revised exemption criteria.

Before catalytic converters, starting a gas-powered vehicle could choke the surrounding area with smog. Bettmann via Getty Images Cars on the road today are 99% cleaner than they were in 1970. Air ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Ann E. Carlson, University of California, Los Angeles (THE CONVERSATION) Cars on the ...

Eighty years ago, the enchantment ended. Los Angeles, that magical realm of shimmering natural beauty, was befouled by smog — maybe forever. The mayor, Fletcher Bowron, told Angelenos in 1944 to lower ...

California’s modern smog-check program dates back to the 1980s. Over the decades, updates imposed biennial emissions inspections on all 1976-and-newer vehicles, requiring tailpipe or ...

A Boeing KC-135R Stratotanker was seen flying over California while apparently tethered to a B-21 Raider, a stealth bomber with nuclear capabilities that’s still in development, photos and videos show ...

Scientists at UC Santa Cruz, UC Davis, and the U.S. Department of Agriculture’s National Veterinary Services Laboratory confirmed the outbreak late Tuesday evening. This marks the first outbreak of ...

A bipartisan group of state lawmakers has revived a bill backed by comedian and TV personality Jay Leno that would exempt old collector cars from California’s smog check requirement. What happened: ...

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. “They seemed to be doing ...