Ram Nath Kovind (left) walked with Indian Prime Minister Narendra Modi (right) and Bharatiya Janata Party senior leader L.K. Advani (center) on their way to file Kovind's nomination papers for the presidential elections in New Delhi on June 23. Kovind belongs to the lowest rank of Hinduism's hierarchy. Manish Swarup/AP hide caption

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Manish Swarup/AP

Sen. John McCain's diagnosis of brain cancer could eventually leave the Senate without its irascible military hawk who never holds back. Kym Smith/Newspix via Getty Images hide caption

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Kym Smith/Newspix via Getty Images

Glioblastomas are the most common malignant brain tumor. About 12,000 people in the U.S. are diagnosed with the cancer every year. Sherbrooke Connectivity Imaging Lab/Science Source hide caption

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Sherbrooke Connectivity Imaging Lab/Science Source

Members of the opposition launched a 24-hour nationwide strike on Thursday to increase pressure on beleaguered leftist President Nicolas Maduro following four months of deadly street demonstrations. Here, demonstrators block off an avenue during an anti-government protest. Ronaldo Schemidt/AFP/Getty Images hide caption

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Ronaldo Schemidt/AFP/Getty Images

Hundreds of protesters hold signs and chant at a rally in front of the Colorado State Capitol in Denver. Education Secretary Betsy DeVos is scheduled to deliver a speech to the American Legislative Exchange Council, or ALEC, which backs school choice policies coast to coast. Ann Marie Awad/CPR hide caption

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Ann Marie Awad/CPR

Betsy DeVos' Latest Speech Draws Protests, Even Before She Speaks

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During a media preview on July 13, Cassandra Hatton of Sotheby's displays the Apollo 11 contingency lunar sample return bag. It was used by Neil Armstrong on Apollo 11 to bring back the first pieces of the moon ever collected. Jewel Samad/AFP/Getty Images hide caption

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Jewel Samad/AFP/Getty Images

The morphine-like pain killer Oxycontin is just one of a number of opioids fueling a substance use crisis in the U.S. federal health officials say. And successful treatment for the substance use disorder can be costly. Leonard Lessin/Getty Images/Science Source hide caption

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Leonard Lessin/Getty Images/Science Source

Body camera footage of a Baltimore police operation released by the public defender's office appears to show an officer hiding drugs and later discovering them. Baltimore Police Department hide caption

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Baltimore Police Department

In Somerset County, Pa., coal was once the economic backbone. But as technology advanced, mines around the country began laying off workers, replacing them with machinery. Laura Roman/NPR hide caption

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Laura Roman/NPR

Living In Coal Country: Somerset County Residents On The Declining Economy

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Piles of plastic waste are pictured on the seaside in the coastal town of Khalde, south of the Lebanese capital Beirut, on September 22, 2016. Joseph Eid/AFP/Getty Images hide caption

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Joseph Eid/AFP/Getty Images

Plastic Is Everywhere And Recycling Isn't The End Of It

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O.J. Simpson during a break in a court hearing in Las Vegas in 2013. Simpson is up for parole after nearly nine years in prison on charges stemming from a bid to retrieve sports memorabilia. Ethan Miller/AP hide caption

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Ethan Miller/AP

O.J. Simpson Parole Hearing Could Lead To His Release From Prison

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Arctic sea ice is seen from a NASA research aircraft on March 30, 2017, above Greenland. A top Interior Department scientist who tracks Arctic conditions says he was demoted by the Trump administration for speaking out on climate change. Mario Tama/Getty Images hide caption

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Mario Tama/Getty Images

Climate Scientist Says He Was Demoted For Speaking Out On Climate Change

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Tymia McCullough is a poised, pageant-winning 11-year-old from South Carolina. She also happens to have sickle cell anemia and relies on Medicaid to pay for medical care. Liam James Doyle/NPR hide caption

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Liam James Doyle/NPR

Her Own Medical Future At Stake, A Child Storms Capitol Hill

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Donald Trump Jr. is interviewed on the Fox News Channel earlier this month, where he discussed his meeting last year with a Russian lawyer. Richard Drew/AP hide caption

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Richard Drew/AP

Renee Hall has been hired as police chief in Dallas, after a stint as deputy chief in Detroit. Courtesy of Detroit Police Department hide caption

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Courtesy of Detroit Police Department

President Trump with Russian President Vladimir Putin at the G-20 Summit in Hamburg, Germany, during a formal meeting on July 7. The White House on Tuesday acknowledged that a second, previously undisclosed meeting between the leaders also took place. Evan Vucci/AP hide caption

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Evan Vucci/AP