Chelsea Clinton stands behind her mother after Hillary Clinton won the New York Democratic primary in April. Justin Sullivan/Getty Images hide caption

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Clinton was the first student to deliver a commencement speech at Wellesley College in 1969. Her criticism of Sen. Edward Brooke's speech received national attention. John M. Hurley/Boston Globe via Getty Images hide caption

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Taking On A U.S. Senator As A Student Propelled Clinton Into The Spotlight

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Hillary Clinton joins President Obama onstage after he delivers his speech at the Democratic National Convention on Wednesday. Aaron P. Bernstein/Getty Images hide caption

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Sen. Tim Kaine spoke Spanish at a rally earlier this month in Miami, where he was announced as Hillary Clinton's vice presidential running mate. Gustavo Caballero/Getty Images hide caption

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Clinton Campaign Says Trump Is Encouraging 'Espionage' After Hacking Comment

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In 2004 Reid Brewer of the University of Alaska Southeast measured an unusual beaked whale that turned up dead in Alaska's Aleutian Islands. A tissue sample from the carcass later showed that the whale was one of the newly identified species. Don Graves hide caption

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Chief David Beautiful Bald Eagle during the opening of the Days of '76 Museum in Deadwood, S.D. Bald Eagle died on Friday at the age of 97. Tom Griffith/Rapid City Journal via AP hide caption

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Democratic vice presidential nominee Tim Kaine does a walk on the Democratic National Convention stage ahead of his prime time speech on Wednesday night. Jessica Kourkounis/Getty Images hide caption

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How Tim Kaine Went From City Council To Vice Presidential Candidate

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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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Virginia Sen. Tim Kaine counted health care policy among his chief concerns at a campaign rally for Hillary Clinton in Miami on July 23. Justin Sullivan/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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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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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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