Watts the Buzz.
I highly recommend this book as it provides a detailed and easy to understand explanation of what EMF's are, how they can affect the human body and what you can do about it.
"Watts the Buzz" helps explain the nature of Electromagnetic Fields, summarises the many scientific studies on the health implications, describes the various international governmental policies used to control and reduce exposure, and suggests practical ways of cutting your electromagnetic field exposure both at home and work.
