A Sig Sauer handgun on sale at a shop in Tucker, Ga. Erik S. Lesser /EPA /LANDOV hide caption

A hilltop view of the 18-foot fence along the U.S.-Mexico border west of Nogales, Ariz. Ted Robbins/NPR hide caption

A section of the Sutter's Mill meteorite, dubbed "Darth Vader," is studied at a lab at the University of California, Davis. The meteorite is made of carbonaceous chondrite, which contains materials that formed the planets of the solar system. UC Davis hide caption

Selsey was Miss Subways January-March 1964 Courtesy of Fiona Gardner hide caption

Rep. Tim Huelskamp, R-Kan., shown in 2010, has said he would deserve a primary challenge if he voted for House Speaker John Boehner's "fiscal cliff" proposal, which would extend the Bush-era tax cuts only on income of less than $1 million. John Hanna/AP hide caption

A man worships at the synagogue in Bello using a prayer book, the Siddur Birkat Shelomo, in which Spanish, Hebrew and phonetic versions are offered. Paul Smith for NPR hide caption

Food companies have begun quietly reducing salt in regular foods because low-salt items like these don't sell as well. Mel Evans/AP hide caption

In this photo illustration, a Rock River Arms AR-15 rifle is seen with ammunition. Joe Raedle/Getty Images hide caption

Most hydraulic fracturing in California is done to extract to oil in areas like this field in Kern County. The state is drafting fracking regulations for the first time. Craig Miller/KQED hide caption

For a Johnny Cash superfan, the 63-disc Complete Columbia Album Collection is a dream come true. Legacy Recordings hide caption