Teaching Electromagnetic Radiation effects on Humans

We teach electromagnetics as part of a general education course in physics (for non science majors) in which we relate physics to societal issues. The course covers the effects of electromagnetic radiation on human beings. This discussion is limited to at most one class room period (about 50 minutes) usually less. There are several important conceptual issues that must be covered before such a presentation can be meaningful. The paper presents the arguments we use in this course