Background radiation is the invisible radiation that is always present in our environment. It comes from a variety of sources, both natural and man-made. Natural sources include cosmic rays from space ...

Coloradans are subjected to, on average, four times more naturally occurring radiation than the average American. It is the price of living in a mountainous and geologically rich region, but the full ...

Radiation is energy that moves from one place to another in a form that can be described as waves or particles. We are exposed to radiation in our everyday life. Some of the most familiar sources of ...