New study examines mortality costs of air pollution in US

A team of University of Illinois researchers estimated the mortality costs associated with air pollution in the U.S. by developing and applying a novel machine learning-based method to estimate the life-years lost and cost ...

How anti-sprawl policies may be harming water quality

Urban growth boundaries are created by governments in an effort to concentrate urban development—buildings, roads and the utilities that support them—within a defined area. These boundaries are intended to decrease negative ...

Crowdsourcing pollution data could benefit public health

Wildfire smoke regularly threatens air quality over vast regions of places like California. But a new study finds a network of low-cost sensors placed in private homes could paint a more detailed picture of localized pollution, ...

Video: Aerosol spread from Australian fires

Ferocious bushfires have been sweeping across Australia since September, fueled by record-breaking temperatures, drought and wind. The country has always experienced fires, but this season has been horrific. A staggering ...

Citizens battle to save China's sickly 'mother river'

Water has been a source of death as well as a source of life for a generation in Shenqiu, a region fed by a tributary of China's heavily polluted Yangtze river and pockmarked with notorious "cancer villages".

New study shows dominance of local air pollution sources in Delhi

The University of Surrey has revealed results from a new, comprehensive study that suggests that activities such as construction and vehicle traffic contribute significantly to the Delhi National Capital Region's high concentrations ...

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Pollutant

A pollutant is a waste material that pollutes air, water or soil, and is the cause of pollution.

Three factors determine the severity of a pollutant: its chemical nature, its concentration and its persistence. Some pollutants are biodegradable and therefore will not persist in the environment in the long term. However the degradation products of some pollutants are themselves polluting such as the products DDE and DDD produced from degradation of DDT

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