A few months ago, I posted a video about an engineer in Brazil who created “light bulbs” by installing clear plastic 2-liter bottles into the ceilings of buildings and capitalizing on the sun to light businesses and homes.
A friend on Twitter (thanks, Andrew!) recently sent over a similar video about “solar bottle lights” used in the Philippines. If you didn’t see the first one, or if you are interested in green technology solutions, check it out: