talkin bout cheap day lighting techniques….towards a low carbon society…re-using empty soda plastic bottles is not a bad idea, they last a hundred years anyway…
day lighting s using no artificial lights when d sun is shinning! definitely saves money!
- The cheapest sustainable light bulb in the world can be found in your garbage can (cbsnews.com)
- Solar Light Bulbs from Recycled Bottles (makezine.com)
- The World’s Cheapest Lightbulb Is Made Of Just A Plastic Bottle (fastcompany.com)