Netflix's original series Daredevil, which stars a blind superhero, was originally hard for blind audience members to understand. The series was released without audio description that would make it accessible to the visually-impaired. TV broadcasters are required to release such descriptions for some content, but Netflix, as an internet streaming service, faces no such requirement. Netflix hide caption

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To sleep, perchance to consolidate important connections in far-flung parts of the brain. Alberto Ruggieri/Illustration Works/Corbis hide caption

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Marco Rubio celebrates onstage with his family in 2010 after winning his U.S. Senate seat in Florida when he was just 39 years old. Now, he's expected to embark on a run for president. Alan Diaz/AP hide caption

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Re-enactors re-create the Battle of Appomattox Court House as part of the 150th anniversary of the surrender of the Army of Northern Virginia at Appomattox Court House. Steve Helber/AP hide caption

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A "getaway selfie," as Mokhtar Alkhanshali calls it: Alkhanshali (left) makes his way across the Red Sea with this boat driver — and without navigation equipment. Mokhtar Alkhanshali hide caption

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Dr. Raj Mangrulkar and medical student Jesse Burk-Rafel at the University of Michigan Medical School. Good communication skills, teamwork and adaptability will help doctors thrive through swift changes in medical science, Mangrulkar says. Leisa Thompson/Courtesy of University of Michigan Medical School hide caption

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For someone 2.5 inches shorter than average, the risk of coronary artery disease increases by about 13.5 percent, scientists found. PW Illustration/Ikon Images/Corbis hide caption

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Fields of carrots are watered March 29, 2015, in Kern County, Calif. Subsidized water flowing in federal and state canals down from the wet north to the arid south helped turn the dry, flat plain of the San Joaquin Valley into one of the world's most important food-growing regions. Frederic J. Brown/AFP/Getty Images hide caption

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Joshua Haggmark, Santa Barbara's water resources manager, is in charge of getting the city's desalination plant back online. Becky Sullivan hide caption

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Secretary of Energy, Ernest Moniz, left, and Secretary of State, John Kerry wait for the start of a trilateral meeting at an hotel in Lausanne in March. Brendan Smialowski/AP hide caption

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