i was always aware that u should keep ur cellphone at a distance to minimize radiation ie using speaker phone when possible etc.

but did u know that earphones plugged into ur iphone or phone emit radiation as well?

check out this video of an EMF measurement of the headphone radiation

YouTube - EMF 50 HZ radiation from headphones SONY MDR-E818

this guy is offering a "Safe" alternative

Air Tube Headset Protection.* Blue Tube Headset. Protect Yourself Now.

and for those of u who are stil holding the phones close to ur heads