Wouldn’t be great to have a self-powering MP3 player? Zhiliang Chen from Hong Kong designed the green MP3 player. He used an old and forgotten technology.
Why this technology was forgotten? Because has a very low efficiency, but combined with today’s low energy consuming technology, in this case the MP3 player, has a great green future. I’m thinking of a self-powering cell phone (because I always forget to recharge it) or a self-powering iPod.
I don’t know then will be in mass production, but I will buy one for me.