It's Official - Cell Phones are Killing Bees
inhabitat.com
inhabitat.com
I don't know if it is junk or isn't, but I wouldn't call it 'Official' myself based on this.
Edit: There's also a link to the research this is based on - http://www.kokopelli.asso.fr/documentation/favre.pdf . Self-published and not claiming that cell phones are killing bees, so a good point to begin further studies but, again, hardly 'Offical proof'.