News tagged with contaminants

Related topics: groundwater · drinking water · water · bacteria · outbreak

NZ toxic contaminant levels halved, study shows

Blood samples taken by Massey researchers to measure the concentrations of toxic environmental contaminants, called persistent organic pollutants (or POPs), show their levels halved in the past 15 years among New Zealand's ...

Nov 21, 2013
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Something in the (expecting mother's) water

Pregnant women living in areas with contaminated drinking water may be more likely to have babies that are premature or with low birth weights (considered less than 5.5 pounds), according to a study based at Princeton University's ...

Oct 08, 2013
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New light on asbestos risks

Scientists are coming up with new ways to assess the risk of exposure to asbestos, leading to improved management of sites contaminated with the potentially lethal material.

Sep 18, 2013
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Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms . Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they exceed natural levels. Pollution is often classed as point source or nonpoint source pollution. The Blacksmith Institute issues annually a list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.

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