In this March 3, 2015 photo, a pair of pelicans rest on the edge of a barge filled with sea salt ready for exportation, at the Salt Export Co. (ESSA), port installations, in Guerrero Negro, Mexico's Baja California peninsula. According to ESSA, their company operates the world's largest solar salt business, producing approximately 7 million tons annually. (Photo by Dario Lopez-Mills/AP Photo)
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