No one drives a car without first learning about car safety and driving risks. Why do 5 billion people use cell phones without any knowledge of how they work and how to use them safely? Many mothers who would never smoke or drink while pregnant, none the less, are oblivious to the dangers of their cell phone use to the embryo. And many men simply do not realize the relationship of their falling sperm count and libido with their cell phone usage. Here is a definitive scientific presentation that you owe it to yourself to watch all the way through.
You really can't afford to use high tech scientific devices like cell phones and be scientifically illiterate at the same time.