Here is a IPOD visualization which is Eco-Friendly, does not engage in global warming.
Imagine that your IPOD renewes it's energy from Solar rays.
IPOD are charged by connecting to computer or any other electrical devices normally. IPOD consumes electricity to function. Instead of charged by electricity, why don't we charge with Solor Power.
Solar power is bio friendly energy resource.
I remember few decades back there were wrist watches they function by extracting electrical power from Solor Energy. I had to show the watch to sun light. It got charged. That's it. I remember the company name of the wrist watch is HMT. I am not aware whether this company exists or not now.
In the same manner, if IPOD are charged by exposing it to Sun rays, we can save considerable watts of electricity and reduce global warming.
Your Ipod power consumption may be little bit. But if we account the total power consumption by all the IPODs functioning in the world, the power consumption by IPODs worldwide will be huge.
Companies and Government should focus in developing Green IPOD or Solar IPOD.
Moreover, this is a possible project compare to Solar Cars. Projects on inventing Solar Cars is on the way. Every year there are some solar car exhibitions happening. When Car can get its energy from Solar, why can't IPODs.
Solar IPODs makes the difference with environment.