Core77

While some people have been making PET bottles into armor, eco-activists in Bolivia have turned discarded beverage containers into something more useful: a house. The creative environmentalists used 25,000 PET bottles filled with sand to build a livable structure, fortified with cement and steel beams to take up the structural slack. The success of the project, in Bolivia's impoverished town of Warnes, has encouraged the activists to draw up plans for another ten houses.

via eco friend