Bottle Brick school wall – Photo: Hug It Forward/Rotary

Bottle bricks, empty plastic bottles filled with compressed non-biodegradable waste, originated in Guatemala. Peace Corps workers adopted the technique to build schools. Ecobrick construction projects cost less than those with conventional bricks, and they are zero carbon – no kiln required. They are assembled from local waste normally would be landfilled or just left lying around littering waterways and communities. They are also being used to build playgrounds, benches, walls/borders, and even houses in places far from Central America – good ideas travel fast!