Solar Hybrid Lighting Tested In California

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A handful of buildings in California are beginning to try a new kind of indoor lighting: sunlight without windows. It’s called hybrid solar lighting, and it is being marketed by a company called Sunlight Direct. During the day, sunlight is captured and channeled into lighting fixtures, then at night, the fluorescent bulb takes over. On […]

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(Bio)Diesel Vehicles

Diesel vehicles are meta-efficient when run with Biodiesel fuel. Some cars are listed as "TDIs", meaning they have a Turbo-Charge Direct Injection Engine — these cars can also be run on Biodiesel. Diesel engines are fuel-efficient, for example VW Jetta TDIs get around 47 mpg. Earlier diesel cars, produced in the 1960s and 1970s were […]

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