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Malaria parasites, spread by a mosquito's bite, have started to adapt so the go-to drugs won't knock them out. Daniel Heuclin/Nature Picture Li/Getty Images/Nature Picture Libr hide caption

Secretary of Homeland Security John Kelly answers questions during a news conference on Tuesday in Washington, D.C. Drew Angerer/Getty Images hide caption

A child drags a crate at a refugee camp for Syrians and Kurds north of Athens. Children under age 14 make up nearly half of the Syrian refugees resettled in the U.S. Louisa Gouliamaki/AFP/Getty Images hide caption

New York City restaurant Serendipity 3 makes the "Quintessential Grilled Cheese Sandwich," made with gold leaf, accompanied by the gold-adorned South African Lobster & San Marzano Tomato Bisque, for sandwich-dipping, of course. Courtesy of Liz Steger hide caption

Missiles on display in northern Tehran in 2014. A reported missile test by Iran on Sunday has led some American officials to accuse the country of violating a U.N. resolution that accompanied the 2015 nuclear deal. Atta Kenare/AFP/Getty Images hide caption

Worshipful female followers fought for the Mad Monk's leftover bread crusts. His infamous sweet tooth led to his death. Or did it? A century later, rumors about Grigori Rasputin, Russia's czarina whisperer, still swirl. RGALI/Courtesy of Farrar, Straus and Giroux hide caption