With increasing use of mobile phones and VDUs, levels of background radiation and electromagnetism are rising, particularly in the workplace and also in the home. To some extent this is unavoidable, but the level of dangers is unclear: is it trivially small, moderate or high? What are the risks of illness, and how can these be reduced to minimal or tolerable levels? Are some people more vulnerable than others? What can or should employers, building engineers and designers, product designers, workers and other members of the public do? This book, of which the chapters derive from presentations given by distinguished authorities at a major international conference, aims to present sound technical information on the whole range of key issues in a clear and accessible way.