Radiation can be used for many things. Most of them good, but there are times it's bad. Like in an atom bomb they are terrifying the radiation stays and doesn't go away for years so it's bad. But there are many ways that it can be good also. Doctors use it in sterlizing their instruments and you use them for x-rays, and using them for cutting down and getting rid of cancer but, this is a very tricky place because when you destroy the cancer cells you destroy some normal cells to which is bad, the good thing is you get rid of cancer though, which can cause bad tumors in the brain or other places. 

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