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gestation. High-intensity levels can cause fetal death or malformations, especially of the brain and skull. These effects are not surprising, since the exposures also substantially elevate the animals’ body temperature. Lower intensities do not cause heating and have generally been found to produce no harmful effects. In any case, the levels of radio- or microwave exposure in these animal experiments are well above those to which most women are normally exposed. However, there are some occupations that involve exposure to microwaves or radio waves at intensities much higher than the communication frequencies in the air all around us. The power of electromagnetic radiation decreases exponentially with distance, which means that its intensity is considerably higher at the site of generation—on top of a radio tower, for instance—than even a short distance away. People who
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Lise Eliot (What's Going on in There?: How the Brain and Mind Develop in the First Five Years of Life)