A poultry processing plant in France. Europe banned treating chicken carcasses with chlorine in the 1990s out of fear that it could cause cancer. Christophe Di Pascale/Corbis hide caption

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Pro-independence Catalans protest in front of a Spanish government delegation in Barcelona Monday, after Spain's Constitutional Court suspended an independence referendum called by Catalonia. Josep Lago/AFP/Getty Images hide caption

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A group of Swedish scientists who are fans of Bob Dylan's music made a bet 17 years ago to see who could work more of the folk singer's song lyrics into their scholarly articles. AP hide caption

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Archaeologists inspect a female figurine inside a recently discovered, fourth-century B.C. tomb, in the town of Amphipolis, northern Greece on Sept. 7. The occupant of the tomb is unknown, but there's speculation that it could be someone who was closely linked to Alexander the Great. Greek Culture Ministry/AP hide caption

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Ukrainians pray during a service supporting the self-proclaimed Donetsk People's Republic in front of an occupied administration building in Donetsk, Ukraine. A ceasefire has been shaky and many separatists say their goal is still full independence from Ukraine. Alexander Ermochenko/EPA/LANDOV hide caption

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Five industrial wind turbines form part of the Gorona del Viento power plant on the island of El Hierro. By the end of this year, the power plant is set to generate 100 percent of the energy El Hierro needs, making it the world's first energy-independent island powered only by renewables. Lauren Frayer for NPR hide caption

itoggle caption Lauren Frayer for NPR

Munich's Mayor Dieter Reiter uses a wooden hammer to pound a tap into the first Oktoberfest beer barrel. "It is not most important mayoral job, but it is the most watched," says Christoph Deumling. Hannes Magerstaedt/Getty Images hide caption

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