Fraunhofer CSP researchers in Germany are developing printing and color technologies to make conventional silicon PV panels less visible when installed on building façades, roofs, and balconies.
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If you're in your thirties and get a bit giddy about saving money, you'll love these 41 things
There is no thrill on earth quite like this magical laundry stain remover that will bring even the grimiest clothes back from ...
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