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  Germany’s green revolution

What would it take to transform the whole country’s electric grid–to shut down all of its old power plants, and move to a system that generates electricity exclusively from renewable resources?


Inkjet printing solar panels: cheap and almost green

Solar energy is one of the easiest and greenest of the renewable energy sources, but its high price is holding it back. One of the most promising new research developments involves printing thinner, cheaper panels with an inkjet.

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