The Sun. Without it no life on earth would exist. random1881.wordpress.com/the-sun-and-health/
Bringing Sunlight Inside Mechanical Engineers Create High-tech Solar PanelsSolar energy technology is advancing daily. A team of different types of scientists at Rensselaer Polytechnic Institute has developed a radical new solar energy technology that promises to collect and distribute solar energy more efficiently.
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http://www.sciencedaily.com/videos/2007/0507-bringing_sunlight_inside.htmEfficiency Boost Makes Solar Cells CheaperSilicon is the material of choice in the electronics industry because of its stability, non-toxicity and ubiquity. However, silicon is a poor absorber of light.
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http://www.sciencedaily.com/releases/2007/05/070502153700.htm///all are one///