This policy update explores the U.S. multi-pollutant emissions standards for model years 2027 and later, which establish new ...

The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.

SINGAPORE – From March 25 to 27, residents across Singapore experienced noticeably hazy conditions. Levels of PM2.5, a type of pollutant, were elevated, and the Pollutant Standards Index – a ...

Singapore woke up to hazy skies this morning, with air quality registering in the moderate range, according to the National Environment Agency (NEA). The Straits Times (ST) reported that at 9am, the ...

Gary Advocates for Responsible Development has asked Cleveland Cliffs and U.S. Steel to follow the Biden-era standards, regardless of what the federal government decides to do. The Environmental ...

March 11 (UPI) --Fewer than one in five global cities met World Health Organization air pollution standards in 2024 with Central and South Asia accounting for the nine most polluted metropolitan ...

SINGAPORE: Haze tinged Singapore’s skies on Wednesday (March 26) morning, with the Pollutant Standards Index (PSI) – a measure of air quality here – registering moderate levels at 9am.

PETALING JAYA: It is all about bad air. The difference is that Singapo­reans use the term “Pollutant Stan­dards Index” to measure the concentration of particulate matters in the air for a ...