One of the most important disadvantage of the alternative energy sources is that it can not solve the problem of producing energy in big scale with low costs.
May be is time to change our point of view. Why not thinking about alternative energy sources with a different approach, putting the stress in the day to day of the individual human being.
In this podcast from BBC is explained how a plain solar-powered lamp has change the life of a lot of people around the world without pollution. I hope you enjoy it.
Click here to listen or download it:
Note: a "podcast" is a radio program you can download from internet and listen in your computer or mp3.