December brought storm clouds to the Porter Ranch neighborhood in Southern California's San Fernando Valley. David McNew/AFP/Getty Images hide caption

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According to legend, the Explorers Club — a society of scientific adventurers — served its members a prehistoric dish at its annual dinner in 1951. By some accounts, the mystery meat was woolly mammoth; by others, extinct giant sloth. Now DNA analysis has provided a definitive answer — and unraveled a decades-long deception. Katherine Du/NPR hide caption

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Sporadic dengue fever outbreaks in Florida in 2009 and 2010 spurred mosquito control efforts in Key West and Miami Beach, shown here. The same mosquito that carries dengue, Aedes aegypti, can transmit Zika. Joe Raedle/Getty Images hide caption

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The Noor I Concentrated Solar Power plant, shown on Thursday, is the first phase of a large solar thermal power plant that is intended to supply more than a million Moroccans with electricity. Fadel Senna/AFP/Getty Images hide caption

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Food writer Bee Wilson says that babies are most open to trying new flavors between the ages of 4 and 7 months. Duane Ellison/iStock hide caption

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Amelia Westerdale works with physics students during a tutorial session at the University of Colorado Boulder. Westerdale is part of the Learning Assistant Program, tasked with helping to coach and tutor students. Theo Stroomer for NPR hide caption

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When so-called senescent cells were removed from mice, they were healthier and lived longer than mice that still had the cells. Philippe Merle/AFP/Getty Images hide caption

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This San Francisco home collapsed in the 1989 Loma Prieta earthquake, which also claimed dozens of lives. ADAM TEITELBAUM/AFP/Getty Images hide caption

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An adult spirit bear crosses a fallen log over a stream in the Great Bear Rainforest in British Columbia. Barcroft Media/Barcroft Media via Getty Images hide caption

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