Serena Williams en route to winning the Western & Southern Open in Cincinnati on Sunday. Tannen Maury/EPA/Landov hide caption

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Medical volunteers walk past tents set up on the playground of a primary school as temporary shelters for victims after explosions in Tianjin, China, on Aug. 13. Reuters/Landov hide caption

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Former President Jimmy Carter discusses his cancer diagnosis during a press conference at the Carter Center on Thursday in Atlanta, Georgia. Jessica McGowan/Getty Images hide caption

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A migrant arrives with his son on the shore near the village of Skala Sikaminea, on the southeastern Greek island of Lesbos, Greece on Friday. Greece this year has been overwhelmed by record numbers of migrants arriving on its eastern Aegean islands, with more than 160,000 landing so far. [Caption from AP, lightly edited.] Visar Kryeziu/AP hide caption

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William F. Buckley (left) and Gore Vidal square off on Nov. 5, 1968. ABC Photo Archives/ABC via Getty Images hide caption

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