Never write a book on a risk in the absence of any evidence

This is a comment from Bob Park, a renowned physicist from the US.  Never has a truer word been spoken. Probably similar to saying "don't comment on something you know nothing about".

This quote was from a discussion regarding the health risks of mobile phones..... so far there is no well conducted research that indicates a risk from mobile phone useage.

My mantra whenever someone says something startling or counter-intuitive is "show me the evidence".  So with mobile phone useage and health risks, I say- show me the evidence, and I mean rigorous scientific evidence, not dodgy hocus-pocus.