Elizabeth Blair

Casting and skin color are at the heart of a controversy surrounding a new movie about the legendary singer Nina Simone. The movie hasn't been released yet, but the casting of Afro-Latina actor Zoe Saldana in the lead has caused an uproar from some Simone fans and family members.

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Beatles fans around the world are paying tribute to the group's longtime producer, Sir George Martin, who died Tuesday at age 90.

Paul McCartney said in a statement, "The world has lost a truly great man who left an indelible mark on my soul and the history of British music." George Martin also left a lasting mark on the art of record production.

Whether horns or harpsichord, so many of the embellishments you hear on the Beatles' songs came from Martin. He wasn't just a good producer, says Grammy-winning producer Nigel Godrich.

First, it's not really black. It's not even a color or a pigment. "Vantablack" is a "material," according to Surrey NanoSystems, the British company that created it.

President Obama has nominated Carla D. Hayden as the next librarian of Congress. If confirmed, she would be the first woman and first African-American ever to lead the world's largest library.

Hayden is currently CEO of the Enoch Pratt Free Library in Baltimore.

In a White House statement, Obama says he and the first lady have known Hayden since she was at the Chicago Public Library, where she was deputy commissioner and chief librarian from 1991-1993.

The aptly titled Sweat is all about work — and the fear of losing it. In the new play by Pulitzer Prize-winning writer Lynn Nottage, change is coming for workers at a steel tubing plant. "They've got buttons now that can replace all of us," one character says. Sure enough, the company is about to move production to Mexico and ask longtime union workers to accept lower wages. They refuse, and end up locked out and replaced by immigrant labor.

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