Health

Air pollution impacts can be heart-stopping: study

There is an increased risk of out-of-hospital cardiac arrest (OHCA) even from short-term exposure to low concentrations of fine particulate matter PM2.5, an international study has found, noting an association with gaseous ...

Health

Airborne pollution associated with more severe rhinitis symptoms

The nasal symptoms of rhinitis are more severe in people exposed to higher levels of outdoor air pollution. That was the conclusion reached by the authors of a study published in the Journal of Allergy and Clinical Immunology, ...

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Pollution

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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