News tagged with pollution

Related topics: air pollution , air quality , greenhouse gas emissions , heavy metals , climate change

Report: EPA fails to disclose risks in human tests

An internal investigation has found that the Environmental Protection Agency failed to disclose long-term cancer risks and a small chance of death to 81 human test subjects who consented to breathe in diesel exhaust and other ...

Apr 02, 2014
popularity not rated yet | comments 0

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.

This text uses material from Wikipedia licensed under CC BY-SA