A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...

Weakening or rolling back longstanding environmental regulations would worsen the problem, the American Lung Association ...

When a gas is very hot, it doesn’t emit all wavelengths of light. Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the ...

The American Lung Association has released its annual “State of the Air” report and several major cities are among the worst ...

Study finds a 18.5% reduction in sick leave following LEZ implementation in Greater London compared to areas in England without low emission zones.