solar
In sunnier climates like Spain and Italy it's very common to see a solar panel hanging out of small mobile phone masts in the countryside.
Forget mobile phone covers made of recycled plastic bottles or handsets powered by sunlight. If you really want to make a green phone call then move to California, where some phone masts will soon run on wind energy. Helix_Wind Helix Wind's turbines capture wind using a helix shaped blades Wind turbine manufacturer Helix …