PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
Monitoring air radiation. Scientist writing down a reading from a radiation monitor on the outer wall of a building. The monitor is used to check the levels of radioactive particles in the air, such as radon. Radon is a radioactive gas produced by the decay of the small amounts of uranium found naturally in all rocks and soil. Levels of radon differ with different geological conditions. In areas with high levels it needs to be prevented from accumulating inside buildings, as exposure to radon increases the risk of developing lung cancer.
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