Four South Asian countries -- Bangladesh, India, Nepal and Pakistan -- have agreed to drastically bring down the annual average of particulate matter (PM) 2.5 in the countries' air to 35 microgrammes ...

The principle of fine dust measurements using a smartphone corresponds to that of simple optical sensors. BERLIN: German scientists are developing a new sensor that attaches to a smartphone and ...

RALEIGH, N.C. -- One afternoon last month, artist Sarahlaine Calva kneeled on the sidewalk above a storm drain along John Chavis Memorial Park, southeast of downtown, painting a mural of giant flowers ...

The state has been working for a year to update its plan to reduce the amount of pollutants that flow into waterways from farmland, city streets, your back yard and other places you might not suspect ...