http://www.hpa.org.uk/webw/HPAweb&Page&HPAwebAutoListName/Pa...
http://www.hpa.org.uk/webw/HPAweb&Page&HPAwebAutoListName/Pa...
That said, the power levels emitted by wifi devices are so far below any safe exposure limits that it's laughable.
I am not going to say Wifi causes cancer because I don't know (doubt it). But this reflexive bleating about non-ionizing radiation needs to stop. Radio waves do not have to break DNA to affect biological tissues. They can alter many important chemical reactions.
Non-ionizing radiation has biological effects. Magnetic fields have biological effects. This is not controversial!
So?
Also, if you are worried that spending a lot of time "exposed" to a light breeze is going to give you skin disease, you might want to read about hypochondria because you have it.