Gun enthusiast Paul Gwaltney at Blue Ridge Arsenal, in Chantilly, Va. Gwaltney, an NPR listener, agreed to host a discussion about guns with friends and colleagues. Becky Lettenberger/NPR hide caption

itoggle caption Becky Lettenberger/NPR

Led by the Rev. Willie Phillips (center), protesters march in February against violence in and around Club Majestic. Mike Haskey/Courtesy of The Ledger Enquirer hide caption

itoggle caption Mike Haskey/Courtesy of The Ledger Enquirer

Grapes, a spiky cluster of wooden stools from the Qing Dynasty (1644-1911), is part of Ai Weiwei's repurposed furniture series. Cathy Carver/Courtesy Hirshhorn Museum hide caption

itoggle caption Cathy Carver/Courtesy Hirshhorn Museum

Heidi Accola works a stand at the farmers market in Baraboo, Wis. She runs a 1-acre organic farm with her husband, but she says they don't talk politics at home because it gets too heated. Melissa Block/NPR hide caption

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Wisconsin Senate candidate Tammy Baldwin sits with state delegates during the Democratic National Convention in Charlotte, N.C., on Sept. 5. David Goldman/AP hide caption

itoggle caption David Goldman/AP

The buildings will be incorporated into a multimillion-dollar construction project on the same site. Doriane Raiman/NPR hide caption

itoggle caption Doriane Raiman/NPR

Brad Beadell (right) takes his 11-year-old son, William, on his first backpacking trip through Henry W. Coe State Park in Morgan Hill, Calif. Melissa Block/NPR hide caption

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Research scientist Leila Takayama poses with a PR2 robot at Willow Garage, a robotics company in Menlo Park, Calif., that produces programmable robots. Melissa Block/NPR hide caption

itoggle caption Melissa Block/NPR

Detail of The First Reading of the Emancipation Proclamation Before the Cabinet. The Library of Congress hide caption

itoggle caption The Library of Congress

Mark Kelly has a new book about his wife, Rep. Gabby Giffords, and her road to recovery since she was shot in the head on Jan. 8. Courtesy of P.K. Weis hide caption

itoggle caption Courtesy of P.K. Weis

Volunteer Dean Ford prepares bags of food to be distributed at the First Baptist Spartanburg's food pantry program.

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Ebert, with Chaz Ebert, accepts a career-achievement award at the theater-owners' convention ShoWest in 2009. Ethan Miller/Getty Images hide caption

itoggle caption Ethan Miller/Getty Images