Radiation and Cell phones :
Cell phones work by emitting radio frequency radiation (RFR) that transmit through the antenna on your phone. This antennae lies right next to your brain. The potential risk of a mobile phone comes from its emission of low levels of radio frequency radiation (RF), the same type of energy that comes off a microwave oven. The RF pulses off the device's antenna right next to the user's head, and that proximity to the brain is what concerns some researchers. It is well known that high levels of RF can produce biological damage through heating effects (this is how your microwave oven is able to cook food). However, it is not known whether, to what extent, or through what mechanism, lower levels of RF might cause adverse health effects as well.
Risks to children :
Preliminary scientific evidence found exposure to radio frequency radiation might have subtle effects on biological functions, including the brain. Children may be more vulnerable because of their developing nervous system, the greater absorption of energy in the tissues of the child's head, and a longer lifetime of exposure.
Views of scientists and researchers :
Inconclusive. There have been some 200 studies on the safety of cell phones. And they all seem to conflict concluding that scientists still aren't sure as to the safety of cell phones. The catch is that these are short-term studies. Cell phones have only been in the mainstream for a few years. No one is sure of the long-term effects.
Preventive measures :
Limit time spent on your cell phone.
Use a phone design that moves the antennae away from the head.
Discourage children from using them.
Don't use a cell phone if the signal is weak. The phone shoots out more radiation to compensate for a poor signal.