One of Chicago's last housing project high-rises awaits demolition last month. Scott Olson/Getty Images hide caption

Mine helmets and painted crosses sit at the entrance to Massey Energy's Upper Big Branch coal mine, a memorial to the 29 miners killed in an explosion April 5, 2010. Jeff Gentner/AP hide caption

Lithograph of the 1861 bombardment of Fort Sumter in South Carolina's Charleston Harbor. Currier & Ives/Library Of Congress hide caption

Golden Retriever puppies in a basket. Aldo Murillo/ iStockPhoto.com hide caption

Dan Drasin's 1961 film, Sunday, captured the April 9, 1961, conflict between New York City folk musicians and police that came to be known as the Beatnik Riot. Via Dan Drasin hide caption

Courtney Strain, shown with her husband, Brock, died of brain cancer in June 2010 at the age of 25. In the months before she died, she said she sometimes felt like an outcast. People didn't know what to say to her, so they said nothing at all. Courtesy of Becky Brooks hide caption

Lead counselor Susan Crews speaks with children at an elementary school in El Paso. Monica Ortiz Uribe/For NPR hide caption

Anna Wilson enlisted big names to help her jazz up some country standards on Countrypolitan Duets. Michael Gomez/Courtesy of the artist hide caption