From left: University of Nebraska–Lincoln researchers Cody Hollist, Natalie Williams and Holly Hatton-Bowers overlook Olinda, a historic city in the Brazilian state of Pernambuco.
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From left: University of Nebraska–Lincoln researchers Cody Hollist, Natalie Williams and Holly Hatton-Bowers overlook Olinda, a historic city in the Brazilian state of Pernambuco.