Social entrepreneur Illac Diaz hopes to brighten a million Filipino poor with his "solar light bulbs" -- water-filled bottles embedded in corrugated roofing. The bottles refract sunlight, lighting the living space below.
PET is easily recycled and shouldn't be left to pile up in dumps and on the ocean floor, says Paul Gardner, executive director of Recycling Reinvented, a group promoting profitable recycling programs that's partially funded by Nestle.
Pictured: Inmates and guards manufacture the "bulbs" in a Manila prison.
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