Memorial Hermann Hospital System in Houston was one of very few nationally renowned hospitals to get a five-star ranking from Medicare. Ed Uthman/Flickr hide caption

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Once scientists grew these Staphylococcus lugdunensis bacteria in a lab dish, they were able to isolate a compound that's lethal to another strain commonly found in the nose that can make us sick — Staphylococcus aureus. Mostly Harmless/Flickr hide caption

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Vice President Joe Biden talks to students from Eagle Academy for Young Men during a walk at the Democratic National Convention on Tuesday. He will speak Wednesday night. Jessica Kourkounis/Getty Images hide caption

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Zafer Aknar is the longtime editor of the Turkish satirical magazine Leman. A printed edition about the failed coup attempt was prevented from distribution last week by Turkish authorities. Lefteris Pitarakis/AP hide caption

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Despite Turkey's Crackdown, Some Critics Are Still Speaking Out

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Some of the more than 30,000 Nuer civilians sheltering in a United Nations base in South Sudan's capital Juba for fear of targeted killings by government forces walk by an armored vehicle and a watchtower manned by Chinese peacekeepers. Jason Patinkin/AP hide caption

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Former President Clinton defended Hillary Clinton's career during his speech at the Democratic National Convention on Tuesday, the night she formally became the party's presidential nominee. Chip Somodevilla/Getty Images hide caption

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Michigan State University researchers Sunpreet Arora (left), Anil Jain (center) and Kai Cao (right) tried 3-D printed fingertips and 2-D fingerprint replicas on conductive paper to unlock a murder victim's phone, similar to one in the photo. Derrick Turner/Michigan State University hide caption

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John Hinckley Jr. is escorted by police in Washington, D.C., following his arrest after shooting and seriously wounding president Ronald Reagan on March 30, 1981. AFP/Getty Images hide caption

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People walk by a mural depicting Freddie Gray in Baltimore on June 23, at the intersection where Gray was arrested in 2015. Prosecutors in Baltimore have dropped all remaining charges against police officers related to Gray's death while in police custody. Patrick Semansky/AP hide caption

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Turkey's President Recep Tayyip Erdogan (in suit and green tie) inspects a police honor guard as he arrives at the parliament in Ankara on Friday. A July 15 coup attempt was quickly crushed in Turkey, a country that has had multiple military takeovers in the past. Burhan Ozbilici/AP hide caption

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Though Jupiter's red spot looks small in this photo, it's actually about 10,000 miles wide — bigger than Earth's diameter. Space Telescope Science Institute/NASA hide caption

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How Jupiter's Red Spot Makes Things High Above It Hot, Hot, Hot

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Mukhtar Mai has fought for justice for the past 14 years. Pakistan's Supreme Court has said it will review its own 2011 decision to uphold the acquittal of five of her attackers. Philip Reeves/NPR hide caption

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Tank, a pet 75-pound tortoise, survived the Los Angeles Sand Fire after his owner were forced to leave him behind. Courtesy of the County of Los Angeles Department of Animal Care and Control hide caption

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Former President Bill Clinton walks off stage after delivering remarks at the Democratic National Convention in Philadelphia on Tuesday. Aaron P. Bernstein/Getty Images hide caption

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Boxer Claressa Shields, shown here in November 2015, wants to follow in Muhammad Ali's footsteps. Harry How/Getty Images hide caption

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For Olympic Boxer Claressa Shields, Round 2 Brings New Expectations

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Between 1999 and 2014, the number of deaths in the U.S. from prescribed opioids quadrupled. Meanwhile medical students were getting very little training on how to spot patients who are at risk for addiction, or how to treat it. Matt Lincol/Getty Images/Cultura Exclusive hide caption

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