Engineering

Concrete versus asphalt for Nigeria's roads: which is better?

Nigeria's new works minister, David Umahi, is pushing for the use of rigid pavement in road construction, as against the flexible pavement predominantly in use. This, as the minister noted, is due to the precarious state ...

Engineering

An eco-friendly solar-driven protocol solves water-oil separation

The discharge of nuclear wastewater from Japan has drawn concern and condemnation from countries around the world. As a result, the issue of marine pollution is once again in the spotlight. Among the traditional marine environmental ...

Energy & Green Tech

Tire maker honored for tackling electric car pollution

Electric cars are widely hailed as the future of transport, but even though they eliminate the issue of fuel emissions from tailpipes, the problem of particle pollution as a result of tire wear hasn't been resolved.

Engineering

Clever coating turns lampshades into indoor air purifiers

Indoor air pollution may have met its match. Today, scientists will report that they have designed catalyst-coated lampshades that transform indoor air pollutants into harmless compounds. The lampshades work with halogen ...

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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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