Among the various inventions and discoveries of the modern era is one that has managed to entice everyone from the richest to the poorest of individuals. It is called the cell phone and is fast becoming a necessity in the everyday life of human beings. As one takes a stroll down the street, grab...

Every creature in the world needs to communicate with another creature from its kind. The insects, for example, have antennas to speak or to understand each other. The dogs, also, have a strong ability of smelling and they realize each other by smelling. For human beings, the communication has diff...