(Medical Xpress)—Just because something is marketed as herbal doesn't make it healthy—especially when it comes to smoking shisha, which can contain toxic metals, tar and other carcinogenic compounds sometimes on par with ...
Nov 11, 2013
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The passage of critical mine health and safety legislation in the late 1960s, along with advances in technology and safety practices, helped to decrease the prevalence of lung diseases for miners. But starting in the mid-1990s, ...
Feb 23, 2018
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Who hasn't taken acetaminophen? Known by brand names as Tylenol, Panadol, or just "non-aspirin pain reliever," we've used it to treat our headaches, pains, and fevers. Ubiquitous in medicine cabinets, it has been around a ...
Sep 15, 2022
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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 disease ...
Sep 27, 2011
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A study involving nearly half a million people in China reveals a clear link between cooking with wood or coal, and an increased risk of major eye diseases that can lead to blindness, according to a report published today ...
Jul 30, 2021
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Air pollution particles from coal-fired power plants are more harmful to human health than many experts realized, and it's more than twice as likely to contribute to premature deaths as air pollution particles from other ...
Nov 25, 2023
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Dandruff sufferers now have a non-toxic product to treat the condition, says a researcher at Georgia Health Sciences University.
Apr 30, 2012
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For the past two decades, there has been a major resurgence in progressive massive fibrosis (PMF), (also known as black lung) among coal miners, leading researchers from National Jewish Health and across the country to examine ...
May 5, 2023
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(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.
Oct 21, 2011
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Rates of severe coal workers' pneumoconiosis—also known as black lung disease—among coal miners have been on the rise recently despite regulations on exposure to dusts associated with mining.
Jul 9, 2019
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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.
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