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 ...

Radiation therapy uses high-energy waves to damage cancer cell DNA and stop growth. It targets a specific area but can sometimes harm healthy cells as well. External beam radiation sends rays from a ...

At the request of the U.S. Congress, the National Academies will form a committee of experts to help define the health and safety issues that need to be guided by an improved understanding of low dose ...