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Christopher Hitchens poses during a portrait session on May 22, 2010 in Australia. (John Donegan/Getty Images)

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Prime Minister of India Narendra Modi listens to speeches during the inaugural session of the 18th SAARC Summit on November 26, 2014 in Kathmandu, Nepal. (Narendra Shrestha - Pool/Getty Images)

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Exhaust plumes from cooling towers at the Jaenschwalde lignite coal-fired power station, April 12, 2007 at Jaenschwalde, Germany. (Sean Gallup/Getty Images)

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Supreme Court Associate Justice Antonin Scalia's bench chair and the bench in front of his seat are draped in black on Tuesday, February 16, 2016, following his death on February 13, 2016. (Photo By Bill Clark/CQ Roll Call)

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DigitalGlobe overview imagery from 09 January 2016 of Woody Island, also known as Yongxing Island and Phu Lam Island, the largest of the Paracel Islands in the South China Sea. (DigitalGlobe via Getty Images)