According to the most recent data from the World Bank, 15 percent of the world’s population—approximately 1.1 billion people—lacked access to electricity in 2014. In 1994, approximately 27 percent of ...

A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both ...

A word of warning: Google for the definition of the word “pummer” at your own risk. Rest assured that this beautiful solar-powered circuit sculpture fits the only definition of pummer that we care to ...

Danish researchers have built a selenium solar cell with the highest open-circuit voltage ever reported. They said that with further improvements in the optoelectronic quality of selenium, the device ...

Plus, nine other walkway lights you don't need batteries or outlets for As the days get longer and the weather starts to warm up, now is the perfect time to refresh your yard. A few simple changes can ...

There are few things as transformative as lighting in garden design — or any design for that matter — yet it is so often overlooked. Both statement-making and functional, good lighting can completely ...

Scientists from Switzerland fabricated a dye-sensitized solar cell with a new tailored organic photo-sensitizer coded MS5 and a copper (II/I) electrolyte. A device solely sensitized with MS5 showed an ...