No one knows how large an amount or how little an amount of radiation it takes to harm you. Cell phone towers emit microwaves. Microwave is a measure of radiation. So be sure to hold your cell phone against your head while your sit beside your microwave oven waiting to eat food saturated with radiation. When you wonder why there is so much cancer in America (and the world for that matter) be sure to include that cell phone that is constantly against your head and that microwave that radiates your food (and flesh because the seals are unreliable), Oh, don't forget the X-ray (another measure of radiation). Aren't you comfortable when you get an X-ray (especially in your mouth) while you wear a lead apron on your body and everyone else wears lead aprons, stands behind a leas screen or leaves the room.