Nokia has decided to try their hand at a green phone, it is a growing trend so perhaps it's time for them to jump on the bandwagon as well. Although this is still a concept design, the fact that they are trying their hand at it even is a good sign.
The phone's outer shell and boning were created through a process of upcycling. The gaskets and the backing for the numeric keypad are made from car tires, all the plastic components are made of recycled PET bottles.
The outer shell itself is made of old metal cans. Although the look of it is quite a bit different from the rest on the market and might to some seem a bit on the ugly side, the small size would likely make it a bit more of a sought after item. Sadly Nokia don't seem to be taking this beyond concept stage.
More hands-on details at PhoneMag