Job seekers fill out applications at a job fair in the Queens borough of New York City earlier this month. Economists say jobs in the middle — in sales, administration and assembly, for example — are being squeezed. Spencer Platt/Getty Images hide caption

From left, Melissa, Moira and Libby Hodges. Courtesy of Libby and Melissa Hodges hide caption

Tyrese Graham teaches science at John Marshall Metropolitan High School in Chicago. StoryCorps hide caption

The monks of The Monastery of Christ in the Desert, on the grounds in Abiquiu, N.M. Sergio Salvador/Courtesy of the artist hide caption

Monsignor William Lynn leaves the Criminal Justice Center in Philadelphia in March. When he finally took to the stand after two months of testimony, the prosecutor called him a liar over and over. Matt Rourke/AP hide caption

San Francisco's Golden Gate Bridge opened in 1937, connecting San Francisco to Marin County in the north. George Rose/Getty Images hide caption

"Given that we were brass players when we started out, we had a very tall hill to climb just to get people interested in our music," says Canadian Brass founding member Chuck Daellenbach (center). Bo Huang/Courtesy of the artist hide caption