Gases: These include nitrogen dioxide (NO₂) and ground-level ozone. “These are potent oxidisers,” says Dr Mahto. “When they ...

Pollution is a public health concern, and is considered to be any harmful material introduced to the environment. Many materials can cause such harm and are referred to as pollutants. Pollutants are ...

Air pollution is expensive. It causes disease, which results in health care costs. It causes people to miss work because they are sick, disabled, or need to care for an afflicted family member. And it ...

On a December day in Lahore, Pakistan's second-biggest city, the smog concealed tall buildings. Men on motorbikes seemed to push through it as they rode. It reeked of diesel and charcoal, compelling ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. Leer en español. From the urban sprawl of Houston to the ...

In 2017, biogeochemist Janice Brahney was collecting dust deposited in remote wilderness areas in the western US. She wanted to study how phosphorus that was transported through the air to these wild ...