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Alleged Islamic State (IS) militants stand next to an IS flag atop a hill in the Syrian town of Ain al-Arab, on October 6, 2014. (ARIS MESSINIS/AFP/Getty Images)

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Chen Shiwei, Xie Zhenye, Su Bingtian and Zhang Peimeng of China celebrate claiming the Gold medal in the Men's 4x100m Relay Final of the 2014 Asian Games on October 2, 2014 in Incheon, South Korea. (Brendon Thorne/Getty Images)

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Protesters take part in the rally for the beginning of Occupy Central movement outside Central Government Offices in Central, Hong Kong on August 31, 2014. (Lam Yik Fei/Getty Images)

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(Chip Somodevilla/Getty Images)

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(Chung Sung-Jun/Getty Images)

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New arrivals suspected of having Ebola await entry as a health worker disinfects an ambulance in a high risk area of the Doctors Without Borders (MSF), treatment center on October 5, 2014 in Paynesville, Liberia. (John Moore/Getty Images)

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(Paula Bronstein/Getty Images)