It seems that no matter where you go, there's someone on their cell phone: in the car, the gym, the Laundromat; I've even heard of people answering their phone during sex! I can't think of any call that's that important. Anyway, having that thing glued to your ear can not only annoy your neighbors, but may also pose serious health risks. For example, men who carry a cell phone or PDA on their belt or in a pocket could potentially reduce sperm counts by as much as 30 percent. Using a cell phone for 2,000 hours in a lifetime (teenagers talk an average of 2,600 minutes a month) raises the risk of getting a certain type of brain tumor by 40 to 270 percent. The risk is highest among people under age 20. Dr. George Carlo, a cell phone researcher and industry whistleblower, predicts 40,000 to 50,000 new cases of brain and eye cancer caused by mobile phones each year worldwide. By 2010, he estimates half a million cases. Powering down now?