Coal and its environmental impacts:coal is the world's single largest contributor of green house gases and is one of the most important causes of global warming.
Many coal-based power genetation plants are not fitted with devices such as electrostatic precipitators to reduce emmissions of suspended particulate matter (SPM),which us a major air pollute water vapot,lead to 'acid rain'.This kills forest vegetation,damges archtictural heritage sites,pollutes water and effects human health.
Thermal power stations that use coal produce waste in the form of'fly-ash'.Large dumps are required to dispose of this waste meterial;some efforts have been made to use it for making bricks.The transport of large quantities of fly-ash and its eventual dumping are costs that have to be included in caluclating the cost benefits of thermal power.
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