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

That's why the state is still trying to lower car emissions, like chemicals from fuel and exhaust, which turn into smog. The federal limit for smog — or ozone pollution near the ground — is 0. ...

A new real-time monitoring system captures minute-by-minute changes in toxic metals resulting from traffic pollution.

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

New technology can help vessels glide quickly over water in less time and with fewer emissions than their diesel counterparts ...

In hot weather, those systems pump a “geothermal fluid” — generally a refrigerant like in an air conditioner — to pick up ...

What You Need To Know A coalition of groups representing the fuel, agriculture and transportation industries are urging Congress to end California’s ability to set its own vehicle emissions ...

Introduction: A Growing Focus on Agricultural Emissions. While Small Engines Market is typically analyzed through the lens of ...

SUMMARY: This announces the availability of Advisory Circular AC 34-1, Fuel Venting and Exhaust Emissions Requirements for Turbine Engine Powered Airplanes. Copies may be requested at the address ...