[chuckm]

Aerohead: Yes, EM field strength varies by the inverse square law. Double the distance from the source will decrease the the strength to 1/4.

Honestly folks, we're talking about low strength fields with exposure times of perhaps 2 or 3 hours a day, usually much less. According to the original post, hybrid vehicles subject the driver to 0.135 gauss at the hip. The earth's natural magnetic field strength is between 0.3 to 0.6 gauss, varying by your location, and you get that 24 hours a day, 365 days a year, for your entire life. I'm not suggesting that anyone live for a year in an MRI machine, but let's lay off the special sauce here.

You want to worry about radiation? I can give you plenty to worry about even without driving a hybrid. Have you tested your house for radon recently? Guess what the number one cause of lung cancer in non-smokers is? Then tack on the ongoing lull in solar activity, (an active sun shields the earth from cosmic rays), and you can tack on another risk (in typical years, cosmic rays constitute about 0.3mSv of the 2.3mSv, or 13%, of the radiation we receive). And let's not forget the biggest EM source in our neighborhood and a leading cause of cancer: the sun! If we really care about cancer, let's figure out how to shut that thing off!