Mine helmets and painted crosses were placed at the entrance to Massey Energy's Upper Big Branch coal mine as a memorial to the 29 miners killed there. Jeff Gentner/AP hide caption

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Ernie Lopez hugs his daughter, Nikki Lopez. He was released from prison on March 2, 2012, in Amarillo, Texas, after serving nine years. Katie Hayes Luke for NPR hide caption

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Jennie and Kristian Aspelin pose in a pumpkin patch with their children two weeks before three-month-old Johan died. Courtesy of the Aspelin family hide caption

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Dismissed Case Raises Questions On Shaken Baby Diagnosis
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Mine helmets and painted crosses at the entrance to Massey Energy's Upper Big Branch coal mine, as a memorial to the 29 miners killed there. Jeff Gentner/AP hide caption

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Simon Cho competes in the men's 500-meter finals at the 2011 ISU World Cup short track speedskating final in Dresden, Germany. He won the event. Robert Michael/AFP/Getty Images hide caption

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U.S. Speedskater Admits To Sabotaging Rival's Skates
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Retired Army Major Michelle Dyarman holds the Purple Heart medal she was awarded after suffering a severe concussion from an IED in Baghdad in 2005. Robb Hill for NPR hide caption

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Once Denied A Purple Heart, A Soldier Gets Her Medal
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John Walker Lindh was captured in Afghanistan in 2002 after fighting with the Taliban. File Photo/AP hide caption

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John Walker Lindh Sues For Prison Prayer Group
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A training session for instructors who teach hand-to-hand combat, or combatives, at the Fort Benning military base in Georgia. Pouya Dianat for NPR hide caption

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Before Reaching War Zones, Troops Risk Concussions
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Organ and tissue donation forms vary from state to state. Some are very general, while others allow people to choose or restrict what they want to donate. iStockphoto.com hide caption

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Am I A Tissue Donor, Too?
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Unlike organs, tissue doesn't need to be transplanted immediately. Storage facilities like Tissue Banks International in San Rafael, Calif., process and store donated tissue for later use in medical products or as transplants. Noah Berger/AP hide caption

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Little Regulation Poses Problems Tracking Tissue
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Chris Truitt holds a photo of his daughter, Alyssa, who died when she was 2, at his home in De Forest Wis. After donating her organs and tissues, he decided on a career change that made him rethink tissue donation. Narayan Mahon for NPR hide caption

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Calculating The Value Of Human Tissue Donation
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