An image is worth a thousand words. As you may see in the picture above, this balloon, made by Cool Earth, is concentrating the solar power to a focal point, where a photovoltaic solar cell is harnessing the light.

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Tahir Cagin, from the Texas A&M University, recently discovered that a specific type of piezoelectric material could convert sound waves into electric current 100 percent more efficient than current devices, when it is manufactured at a very small size - 21 nanometers.

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The Philippines is a pretty sunny country - the sun shines for the most part of the year. And it would be really good to have solar chargers making their way to this country. Not only would such help the environment but it would also help the people of the country save much on energy [...]

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