Electromagnetic fields and radiation are everywhere - near power lines, computers, radio and television signals, microwave ovens, toasters, alarm clocks and everyday electrical appliances. The media are warning of the possible hazards of EMFs and EMR and recent studies suggest that they cause leukaemia in children and breast and brain cancer in adults. This book gives facts about the dangers, revealing that most of us are exposed to radiation and electromagnetic fields everyday. It advises which levels to worry about, and how to minimize the risks. It is also a sourcebook for citizens seeking action from utility companies, employers, manufacturers and governmental agencies.