The most harmful pollutant to human health is called PM 2.5, particle matter smaller than 2.5 microns in diameter that's found in soot, smoke, and dust. PM 2.5 is especially dangerous because it can get lodged in the lungs and cause long-term health problems like asthma and chronic lung disease.
Mercury and Lead Pollution from Mining-
More than two million people globally are affected by mining and ore processing. These mining sites provide various minerals and metals to produce variety of products and minerals. The most hazardous chemicals that are found near these sites are lead, chromium, asbestos, arsenic, cadmium and mercury.
From neighbors and traffic to trains and pets, noise is a part of our everyday lives. But there are serious repercussions when it comes to daily exposure to high noise levels. It’s important to stay aware of how noise can affect you—both physically and emotionally—and learn how you can protect yourself from noise pollution.
A new rule issued by the U.S. Department of Labor's Occupational Safety and Health Administration dramatically lowers workplace exposure to beryllium, a strategically important material that can cause devastating lung diseases. The new beryllium standards for general industry, construction and shipyards will require employers to take additional, practical measures to protect an estimated 62,000 workers from these serious risks.
Air-purifying respirators are many types of negative-pressure respirators which include chemical media and mechanical filters. Positive pressure respirators include powered air-purifying respirators (PAPRs). Air-Purifying escape respirators (APER) are used by the general public for radiological, biological, chemical and nuclear (CBRN) terrorism incidents.
Sudden sensorineural hearing loss (SSHL), commonly known as sudden deafness, occurs as an unexplained, rapid loss of hearing—usually in one ear—either at once or over several days. It should be considered a medical emergency. Anyone who experiences SSHL should visit a doctor immediately.
The pain threshold for humans is 120-130 Decibels. Any sound above 85 dB can cause hearing loss, and the loss is related both to the power of the sound as well as the length of exposure. Here are 10 sounds produced throughout history and how incredibly loud they are. Just remember, human speech is only registered at about 25-35 decibels.
Updated clinical guidelines published the journal Otolaryngology-Head and Neck Surgery say cotton swabs are not appropriate for earwax removal. In fact, information for patients in the guidelines say not to put anything "smaller than your elbow in your ear."
The world is getting louder. Scientists define "noise" as unwanted sound, and the level of background din from human activities has been doubling roughly every three decades, beating population growth. Road traffic in the United States has tripled over the last 30 years. By 2032, the number of passenger flights is expected to be nearly double the 2011 figure—at peak hours, planes are even audible overhead 70 percent of the time in the remote backcountry of Yosemite National Park.
Research published in the Lancet journal found that dementia, a chronic disorder of mental processes, was more common in people who lived within 50 meters of a major road than those who lived further away.
The researchers tracked approximately 6.6 million adults aged between 20 and 85 in Ontario, Canada, for over a decade (2001 to 2012).
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