Canned food is a source of BPA exposure, but researchers aren't sure whether it causes childhood obesity. Above, the soup isle at a grocery store in Washington, D.C. Maggie Starbard/NPR hide caption

Senegalese vendor Cheikh Fall prepares his stall in front of Brooks Brothers on 51st Street, just off the Avenue of the Americas in New York City. Fall runs an association of Senegalese vendors that deals with the city over licensing and regulations. Art Silverman/NPR hide caption

In Ohio Impromptu, one of three short plays featured in Sounding Beckett, the silent character (Philip Goodwin, left, with Ted van Griethuysen) inspired music based on knocks and repetitions. Jeremy Tressler/Sounding Beckett hide caption

Doreen Ramogola-Masire, an obstetrician-gynecologist in Botswana, hopes that a simple, quick screen for cervical cancer with vinegar will catch the disease early and save women's lives. Jason Beaubien/NPR hide caption

Carly Rae Jepsen and the cover of Kanye West's latest album, Cruel Summer. Vanessa Heins/Courtesy of Universal Music Group hide caption