Nihar Janga, 11, of Texas, left, and Jairam Hathwar, 13, of New York, celebrate Thursday in National Harbor, Md., after being named co-champions in the 2016 National Spelling Bee. Jacquelyn Martin/AP hide caption

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A Pennsylvania woman developed a urinary tract infection cased by Escherichia coli bacteria that were found to be resistant to colistin, an antibiotic that is seen as the last line of defense. Nature's Geometry/Science Source hide caption

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Lines of travelers at Denver International Airport snake their way through security on Thursday. RJ Sangosti/Denver Post via Getty Images hide caption

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Cities Consider Privatizing TSA To Speed Up Checkpoints, But Would It?
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Nonprofit Works To Reshape Public Perception Of Latinos In America
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Seattle Sonics Fans Swallow Bitter Pill As Oklahoma City Thunder Thrive
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GOP Congressman Defends House Zika Funding Package
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Trump Surpasses Number Of Delegates Needed To Secure GOP Nomination
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After Departure Of Uber, Lyft In Austin, New Companies Enter The Void
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Tech Billionare Peter Thiel Comes Forward In War Against 'Gawker'
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Doctors Discover First U.S. Case Of Bacteria Resistant To Last Resort Antibiotics
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Donald Trump stands with some of the delegates from North Dakota, who elevated him over the 1,237 needed for the GOP nomination. Charles Rex Arbogast/AP hide caption

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Meet The Unbound Delegates Who Helped Donald Trump Secure The Nomination
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Maureen LoCascio, with the mosquito control team in Hudson County, N.J., uses a backpack sprayer to spread insecticide against mosquito larvae. Hansi Lo Wang/NPR hide caption

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To Kill Mosquitoes That Spread Zika, Strike Before They Fly
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Baylor University President Kenneth Starr runs onto the football field before a 2011 game against Texas Christian University in Waco, Texas. Starr became president of Baylor in 2010. LM Otero/AP hide caption

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