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We live in a sea of electromagnetic fields. But the sea is shallow, and the fields are so minute that they are detectable only with sophisticated technology and are arguably undetectable by biologic systems and, hence, harmless. But a host of biologic studies have been interpreted to suggest that weak fields can affect biology, and a substantial number of epidemiologic studies are thought by some to suggest that these effects can be harmful. Although no such conclusion, biologic or epidemiologic, is at all firm, science is hard put to prove a negative. But if the reality of the effects of
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