Light emitting LEDs in TV screens, LED bulbs for your home, and the back light of phones have been around for many years already. But when three scientists who won the Nobel Prize in Physics earlier this month started working on blue light-emitting diodes, or LEDs in the 1990s, not many could ever imagine what changes it could bring to the underdeveloped world. LEDs powered by solar energy can bring light to over a billion of the world's population without access to electricity. A new company is making signs made of a light-weight corrugated plastic and cuts them to size, puts a small solar panel on one side and three strips of stick-on LED lights on the other. Light! What the organization is doing is reminding us that everything in our daily life can be reused. Even a seemingly small item could be transformed into something that means a lot to those in poverty.
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