Scaremongering is not the nicest way to flog dodgy products, but that doesn't stop it happening. There's a small industry producing gizmos that claim to protect you from harmful electro-magnetic radiation allegedly emitted by mobile phones and computer Wi-Fi. One...
Wi-fi and mobile phone radiation scare tactics hit schools (External link to Mirror Blog)
Wi-fi and mobile phone radiation scare tactics hit schools (External link to Mirror Blog)