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What Is Radon""

Here is a video On RADON 

Radon is a radioactive, colorless, odorless, and tasteless gas. It is formed as natural deposits of uranium throughout the earth’s crust decay. As radon decay products are inhaled, they can alter the cells in the lungs. These alterations can increase the potential for getting lung cancer. Radon is the second leading cause of lung cancer behind smoking. According to the Surgeon General, an estimated 21,000 people die of radon related lung cancer each year.

Radon is produced by the radioactive decay of the element radium. Radioactive decay is a natural, spontaneous process in which an atom of one element decays or breaks down to form another element by losing atomic particles (protons, neutrons, or electrons). When solid radium decays to form radon gas, it loses two protons and two neutrons. These two protons and two neutrons are called an alpha particle, which is a type of radiation. The elements that produce radiation are called radioactive. Radon itself is radioactive because it also decays, losing an alpha particle and forming the element polonium.

Elements that are naturally radioactive include uranium, thorium, carbon, and potassium, as well as radon and radium. Uranium is the first element in a long series of decay that produces radium and radon. Uranium is referred to as the parent element, and radium and radon are called daughters. Radium and radon also form daughter elements as they decay. 
The decay of each radioactive element occurs at a very specific rate. How fast an element decays is measured in terms of the element "half-life", or the amount of time for one half of a given amount of the element to decay. Uranium has a half-life of 4.4 billion years, so a 4.4-billion-year-old rock has only half of the uranium with which it started. The half-life of radon is only 3.8 days. If a jar were filled with radon, in 3.8 days only half of the radon would be left. But the newly made daughter products of radon would also be in the jar, including polonium, bismuth, and lead. Polonium is also radioactive - it is this element, which is produced by radon in the air and in people's lungs that can hurt lung tissue and cause lung cancer.

Radon levels in outdoor air, indoor air, soil air, and ground water can be very different. Radioactivity is commonly measured in Pico curies (pCi). This unit of measure is named for the French physicist Marie Curie, who was a pioneer in the research on radioactive elements and their decay. One pCi is equal to the decay of about two radioactive atoms per minute.

Because the level of radioactivity is directly related to the number and type of radioactive atoms present, radon and all other radioactive atoms are measured in Pico curies. For instance, a house having 4 Pico curies of radon per liter of air (4 pCi/L) has about 8 or 9 atoms of radon decaying every minute in every liter of air inside the house. A 1,000-square-foot house with 4 pCi/L of radon has nearly 2 million radon atoms decaying in it every minute.

Radon levels in outdoor air, indoor air, soil air, and ground water can be very different. Outdoor air ranges from less than 0.1 pCi/L to about 30 pCi/L, but it probably averages about 0.2 pCi/L. Radon in indoor air ranges from less that 1 pCi/l to about 3,000 pCi/L, but it probably averages between 1 and 2 pCi/L. Radon in soil air (the air that occupies the pores in soil) ranges from 20 or 30 pCi/L to more than 100,000 pCi/L; most soils in the United States contain between 200 and 2,000 pCi of radon per liter of soil air. The amount of radon dissolved in ground water ranges from about 100 to nearly 3 million pCi/L.

Why do radon levels vary so much between indoor air, outdoor air, soil air, and ground water' Why do some houses have high levels of indoor radon while nearby houses do not" The reasons lie primarily in the geology of radon - the factors that govern the occurrence of uranium, the formation of radon, and the movement of radon, soil gas, and ground water. 

Why is Radon Bad?

The Surgeon General has warned that radon is the second leading cause of lung cancer in the United States today causing over 21,000 deaths per year. At 21,000 this makes it a bigger killer than drunk driving which accounts for approximately 17,000 deaths per year. You would not let your family ride in a car with a drunk driver, so why would you let them live in a home with high levels of radon?

If you smoke you are at an even higher risk for developing lung cancer. The cumulative effects of smoking and exposure to radon will greatly increase your risk.

Unlike may other types of cancer, lung cancer has a very low survival rate. Even with today’s medical technologies, only 7% of the people diagnosed with lung cancer will survive.

Many scientific studies of radon exposure indicate that children may be more sensitive to radon. This may be due to their higher respiration rate and their rapidly dividing cells, which may be more vulnerable to radiation damage.

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