Does a glass or two of wine during pregnancy really increase the child's health risks? Epigenetics may help scientists figure that out. Katherine Streeter for NPR hide caption

itoggle caption Katherine Streeter for NPR

Niels Tietze leads a group of veterans of the wars in Afghanistan and Iraq up the Snake Dike route on the western wall of Yosemite National Park's Half Dome. David P. Gilkey/NPR hide caption

itoggle caption David P. Gilkey/NPR

Lauren Henderson and her service dog, Phoebe, in Los Angeles. Henderson says she's seeing more dogs in vests that don't appear to be legitimate service dogs. Lisa Napoli/KCRW hide caption

itoggle caption Lisa Napoli/KCRW

Devon Walker smiles with his teammates after the school's home opener in New Orleans. A former team captain, Walker was paralyzed from the waist down during a tackle last September. Courtesy of Tulane Athletics hide caption

itoggle caption Courtesy of Tulane Athletics

Members of the Bay Area Association of Disabled Sailors sail every weekend near San Francisco's Pier 40. The all-volunteer group serves people with a range of physical, developmental and mental disabilities. Emily Green for NPR hide caption

itoggle caption Emily Green for NPR

Speech-language pathologists Jill Tullman (left) and Mendi Carroll (right) work with Bryce Vernon at Talking with Technology Camp in Empire, Colo., on July 25. Kristen Kidd/KCFR News hide caption

itoggle caption Kristen Kidd/KCFR News

Margaret Battin's husband, Brooke Hopkins, was left quadriplegic after he collided with an oncoming bicycle while cycling down a hill in Salt Lake City. Courtesy of The New York Times hide caption

itoggle caption Courtesy of The New York Times

Sound World Solution's hearing device lets a user customize its settings using a Bluetooth connection and a smartphone. Courtesy of Sound World Solutions hide caption

itoggle caption Courtesy of Sound World Solutions

"These thing that were a part of me before the crash, are still present in me" - Joshua Prager James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

Mary Theresa Archbold (left), Anita Hollander and Tiffan Borelli star in Bekah Brunstetter's Gorgeous, part of Theater Breaking Through Barriers' initial Some of Our Parts Festival in 2011. A third round of new short plays runs through June 28 at New York City's Clurman Theatre. Carol Rosegg/Theater Breaking Through Barriers hide caption

itoggle caption Carol Rosegg/Theater Breaking Through Barriers

Dylan Murphy, 3, plays with a swan at the Please Touch Museum in Philadelphia. It was his first trip to a museum that didn't overwhelm him. Courtesy of Noelle Murphy hide caption

itoggle caption Courtesy of Noelle Murphy