Purple pokeberry power (Photo: Muffet on Flickr) Never underestimate the power of weeds. Case in point: the common pokeberry weed – whose red dye was once used by American Civil War soldiers to write letters home – may now hold the secret for revolutionizing the next generation of low-cost photovoltaic cells, making widespread, affordable homegrown solar power a real possibility, especially for developing nations.
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Weed Could Bring Affordable Solar Power Worldwide
