many sites with proof on the danger of wi-fi , mobile phones

http://childparenting.about.com/b/2010/09/05/wi-fi-danger-in-school-real-or-imagined.htm

http://momsforsafewireless.org/About-Us.php

http://www.magdahavas.com/

http://www.wiredchild.org/

http://www.wifiinschools.org.uk/

http://www.wireless-precaution.com/main/science.php

http://www.weepinitiative.org/

http://www.mastsanity.org/wi-fi.html