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Organic solar cells

August 5, 2017

Films capture energy from the sun Production of organic solar cells, flexible in comparison to traditional photovoltaic panels, is beginning on a small-scale in Brazil EVANILDO DA SILVEIRA | ED. …

Out of Darkness

August 1, 2017

Restoring eyesight with a simple, inexpensive surgery Two doctors embark on one of their most challenging missions: fighting blindness and partial blindness in the isolated country of Bu