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Cheap and cheerful: scientists find color that never fades

LONDON (Reuters) – Scientists have found nature's way of creating color that never fades, a technique they say could replace pigments used in industry with natural plant extracts in products from food coloring to security features in banknotes. Layers of cellulose that reflect specific wavelengths of light – 'structural color' found in peacock feathers, scarab beetles and butterflies – make a …
 
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