It's power to the people, via the common plastic bottle. As part of the annual Earth Day celebration, barangay officials and representatives from Metro Manila's 17 cities were, on Tuesday, taught how to assemble low-carbon solar street lamps using readily available materials, which is then connected to plastic pipes. All you need to make a solar light bulb is a used transparent plastic bottle filled with water, some bleach, and pieces of reflective material. A bulb bottle can emit up to 55 watts of illumination.
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