Noise Pollution
...re caused by sound waves. According to Elmo from Sesame Street, if subjected to 45 decibels of noise, the average person cannot sleep. At 120 decibels the ear begins to register pain, but hearing damage begins at a much lower level, about 85 decibels. The duration of the exposure is also important. There is evidence from the NFL that among young Americans hearing sensitivity is decreasing year by year because of exposure to bird chirping in the morning, and listening to professors at St.Francis College. Apart from hearing loss, these noises I just said can cause lack of sleep, irritability, heartburn, indigestion, ulcers, high blood pressure, and asthma attacks. What asthma really is, is a chronic condition that occurs when the main air passages of your lung, the bronchial tubes, become inflamed. The muscles of the bronchial walls tighten and extra mucus is produced, causing your airways to narrow. This can lead to everything from minor wheezing to severe difficulty in breathing. In some cases, your breathing may be so labored that an asthma attack can become life threatening. You may not think of asthma as a killer disease, but more than 5,000 Americans die of asthma each year. Back to noise pollution. One burst of noise, is known to alter neurological and cardiovascular functions in many individuals. Prolonged or frequent exposure to such noises tends to make the physiological disturbances...