Browsing: PM 2.5

A group of prominent Arizona Republicans sued the Environmental Protection Agency (EPA) on Tuesday over new air pollution regulations that they claim will hurt the economy. The Republican leaders of the state’s House and Senate joined with the state Chamber of Commerce and Industry in the suit, alleging the new standards for fine air pollutants known…

The Chiang Mai government is closely monitoring the PM2.5 levels and is expected to provide guidance to provincial units and educational institutions on Sunday to allow their staff to work from…