A flag reading "Refugees welcome here" greets visitors to London's Immigration Museum, located on Princelet Street in an East End building that housed immigrants from the early 18th century onward. Today the museum, in need of structural repairs, is open only on certain days and by appointment for groups. Peter Kenyon/NPR hide caption

Senior Airman Frances Gavalis tosses unserviceable uniform items into a burn pit at Balad Air Base, Iraq in 2008. The military destroyed uniforms, equipment and other materials in huge burn pits in Iraq and Afghanistan. Some veterans say those pits are responsible for respiratory problems they are now experiencing. Senior Airman Julianne Showalter/USAF hide caption

The Graffiti Education and Mural Arts program in San Diego aims to keep kids off the streets — and maybe even make art like this, an example of the famous chicano artists murals found on a series of freeway overpasses, someday. Don Tormey/LA Times via Getty Images hide caption

Paula Pell has "a very toned joke-writing muscle," says comedian Tina Fey. "She can just go and go and go." John Lamparski/WireImage/Getty Images hide caption

Ricardo Robleño Llorente and his wife, Laura Silva Kirkpatrick, show their college degrees at home in Madrid. Even though they have two bachelor's degrees and a master's between them, they were unable to find permanent work through most of their 20s, during Spain's economic crisis. "Why bother going to college at all?" Silva Kirkpatrick asks. Lauren Frayer for NPR hide caption

Akiva Johnson and Henry Jimenez, on a recent visit with StoryCorps. StoryCorps hide caption

Attorney General Eric Holder (right) listens to Viola Murphy, mayor of Cool Valley, Mo., before his meeting with local community leaders in August 2014. Murphy is a vocal critic of new municipal regulations. Pablo Martinez-Monsivais/Getty Images hide caption