London's Design Museum has mounted a terrific exhibit that uses the notion of an ecological backpack to illustrate the minerals and labor that go into our cell phones.
http://www.psychologytoday.com/blog/greening-the-media/201308/3-d-printing-manufacturing-panacea-or-infernal-contraption
http://www.psychologytoday.com/blog/greening-the-media/201308/3-d-printing-manufacturing-panacea-or-infernal-contraption
