Draw your own. Please.
Just try to keep in mind that neither extreme attitude (``There's nothing to worry about.'' vs. ``The only acceptable risk is no risk at all.'') represents much of a commitment to the public good. Radiation hazards are subtle and complex, but the benefits of major sources of environmental radiation (e.g., medical X-rays) are important. They often save lives by endangering them; the deciding factor must involve relative probabilities and cost/benefit analyses, which may seem cold-blooded but are essential if you really want to do as little harm and as much good as you can.
Remember, if you let someone else decide for you, then you forfeit your right to righteous indignation if you later disapprove of their decision.