Do you know the, amount of: TIME WASTED THAT YOU SPEND...For instance you are walking but you are not talking to anyone, people who work in the sea...All that moments all those seconds and minutes while you work, or walk you can have an: Ipod listening to a new language, or reading an instructional book on how to fix a computer, listening to something while you walk, learning a new language, learning the names of all the rivers of the world or the capitals of all the cities in the world...But they need to come out with a solar Ipod...Why not create an, Ipod Cell phone...

Work with 1 earplug in your ears the other one out...

why not create an earplug that amplifies the sound that way you learn faster....