The president exempted a copper smelter in Arizona from air-quality rules. An E.P.A. official guided the company that sought ...

While the dangers of secondhand smoke are widely recognized, a new study led by Prof. Sun Yele at the Institute of ...

Thirdhand smoke stays on surfaces and slowly pollutes indoor air long after smoking stops within indoor environments.

Air pollution remains one of the most serious environmental and public health challenges facing the world today. From the exhaust fumes on busy highways to industrial emissions, wildfire smoke, and ...

Nitrate pollution has become one of the most widespread water quality challenges in intensively farmed regions around the world, threatening drinking ...

Air in the U.S. has gotten cleaner for decades, adding years to people's lives and preventing millions of asthma attacks, but nearly half of Americans still live with unhealthy air pollution, a new ...

We frequently refer to ecological “crises” — using the plural form — to acknowledge the multiple, interconnected ...

From cosmetic controls to individual and collective responsibility: Clean air by prevention at the source, enforcement, and ...

The proposed system in Delhi will use hyperlocal sensors and dynamic source apportionment for targeted interventions.

The data pegs Delhi's average Air Quality Index at 350, placing almost the entire month in the very poor to severe category.