More targeted action against specific categories of polluting vehicles would produce better results, and cause less confusion ...

So happy smogiversary, Los Angeles. We can breathe a lot easier than we used to, but don't let that fool you — we still have the worst air quality in America — a distinction the American Lung ...

Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

As cities expand and economies grow, the continent’s reliance on outdated, polluting transport is fueling a double ...

In Southern California, large warehouses must take steps to reduce the pollution caused by truck visits, either by switching ...

Public Investigator asked the Department of Transportation why tests are still required, and what options exist for people ...

Vietnam is expected to issue new national emission standards for motorcycles this month as part of efforts to reduce urban ...

When President Donald Trump signed legislation to revoke California’s authority to enforce stricter tailpipe emissions ...

Fixation with exiling old vehicles is mistaken. The fault is not in a car’s age, but its emissions  There’s one ranking Delhi regularly tops: World’s most polluted capital city. But while it grabs the ...

It is irrational to imagine that a 10-year-old diesel vehicle has reached its end of life despite remaining roadworthy in ...