News tagged with coal
The dangers of coal mining enter the spotlight periodically when disasters strike, but one West Virginia University researcher argues that coal mine dust exposure, which has caused an increase in the prevalence and severity ...
Health May 17, 2013 | 5 / 5 (1) | 0
People living near asphalt pavement sealed with coal tar have an elevated risk of cancer, according to a study in the journal Environmental Science and Technology. Much of this calculated excess risk result ...
Health Mar 28, 2013 | 1 / 5 (1) | 0
West Virginia counties with coal mining activity have higher total mortality rates than their non-coal mining Appalachian counterparts, a University of Pittsburgh Graduate School of Public Health analysis revealed.
Health Mar 18, 2013 | not rated yet | 0
(Phys.org)—Coal kills. That's the message of "The Silent Epidemic: Coal and the Hidden Threat to Health" by Alan H. Lockwood, MD, University at Buffalo emeritus professor of neurology.
Health Sep 24, 2012 | 5 / 5 (2) | 1
The use of "smoky coal" for household cooking and heating is associated with a substantial increase in the lifetime risk of developing lung cancer, finds a study from China published in the British Medical Journal today. ...
Cancer Aug 30, 2012 | not rated yet | 0
Dandruff sufferers now have a non-toxic product to treat the condition, says a researcher at Georgia Health Sciences University.
Other Apr 30, 2012 | 5 / 5 (1) | 0 |
Prenatal exposure to combustion-related pollutants leads to anxiety, attention problems in young children
Mothers' exposure during pregnancy to a class of air pollutants called polycyclic aromatic hydrocarbons (PAH) can lead to behavioral problems in their children. PAH are released to air during incomplete combustion of fossil ...
Health Mar 22, 2012 | not rated yet | 0 |
(AP) -- More Americans are turning to the emergency room for routine dental problems - a choice that often costs 10 times more than preventive care and offers far fewer treatment options than a dentist's office, according ...
Dentistry Feb 28, 2012 | not rated yet | 0
(AP) -- Scientists are warning officials negotiating a global treaty on mercury that banning the deadly chemical completely would be dangerous for public health because of the chemical's use in vaccines.
Health Oct 21, 2011 | not rated yet | 12
A protein linked to Alzheimer's disease kills nerve cells that detect odors, according to an animal study in the September 28 issue of The Journal of Neuroscience. The findings shed light on why people with Alzheimer's diseas ...
Neuroscience Sep 27, 2011 | not rated yet | 0 |
Birth defects are significantly more common in areas of mountaintop coal mining and are on the rise as the practice becomes more common, according to a study by researchers at Washington State University and ...
Health Jun 23, 2011 | 1 / 5 (1) | 0 |
Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. It is composed primarily of carbon along with variable quantities of other elements, chiefly sulfur, hydrogen, oxygen and nitrogen.
Coal was formed from layer upon layer of annual plant remains accumulating slowly that were protected from biodegradation by usually acidic covering waters that gave a natural antiseptic effect combating microorganisms and then later mud deposits protecting against oxidization in the widespread shallow seas — mainly during the Carboniferous period — thus trapping atmospheric carbon in the ground in immense peat bogs that eventually were covered over and deeply buried by sediments under which they metamorphosed into coal. In this manner, over time, the chemical and physical properties of the plant remains (believed to mainly have been fern-like species antedating more modern plant and tree species) were changed by geological action to create a solid material.
Coal, a fossil fuel, is the largest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide emissions. Gross carbon dioxide emissions from coal usage are slightly more than those from petroleum and about double the amount from natural gas. Coal is extracted from the ground by mining, either underground or in open pits.
For more information about Coal, read the full article at
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