How a bacterium may help solve the plastic pollution crisis

Plastic pollution is one of the most pressing environmental issues of our time. The accumulation of petroleum-based plastics is having devastating effects on our environment, wildlife and human health. In a recent study published ...

Growing dominance of diatom algae in the Pearl River estuary

It is a common perception that waters close to population would be more polluted than those offshore or at higher latitudes.  However, researchers from The Hong Kong University of Science and Technology (HKUST) found that ...

Remote work may be keeping some cities' air cleaner

In the spring of 2020, COVID-19-related restrictions in the United States led to reductions in nitrogen oxide (NOx) emissions because of the sudden drop in road traffic. But even after restrictions were lifted and the flow ...

New report finds stark transit inequity in Baltimore

Shortcomings in the Baltimore region's public transit system disproportionately affect low-income and minority neighborhoods, according to a new report from Johns Hopkins University's Department of Environmental Health and ...

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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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