EPA will no longer assign dollar values to health benefits when regulating PM2.5 and ozone, marking a shift in federal air ...

The Environmental Protection Agency released the final version of a much-anticipated rule on Wednesday that tightens restrictions on fine particulate matter — one of the most pervasive and dangerous ...

The diesel engine emits exhaust particles that pose a unique set of measurement requirements. To document the state–of–the–art of measurement technology and to improve measurement quality, the Smoke ...

The Environmental Protection Agency announced a new rule on Wednesday to significantly reduce the level of air pollution known as particulate matter (PM) by updating the national air-quality standards ...