Mexican homicide detective Marco Ruiz (played by Demián Bichir) must work with his American counterpart, Sonya Cross (Diane Kruger), to solve a murder on the U.S.-Mexico border in FX's new series The Bridge. FX Network hide caption

Modern Chihuahuas trace their genetic roots in America to back before the arrival of Europeans, a new study suggests. mpikula/iStockphoto.com hide caption

Tourists walk across the Badwater Basin which sits 282 feet below sea level, in Death Valley, Calif., on June 30. People from around the world flock to the area to experience temperatures that rise to the high 120's on a regular basis. David Gilkey/NPR hide caption

The Club for Growth is backing a candidate running against Republican Rep. Mike Simpson (shown in this screen shot from the PrimaryMyCongressman.com site) in Idaho's 2014 GOP primary. PrimaryMyCongressman.com hide caption

A boy collects water at a new spigot in Shululu, Tajikistan. Before the government built a new water system, villagers were allocated half-hour time slots to collect water from a trickling tap. Jason Beaubien/NPR hide caption

Sen. Marco Rubio, R-Fla., walks toward the stage as he is introduced at a Faith and Freedom Coalition conference in June. Charles Dharapak/AP hide caption

Ruby and The Romantics' hit song "Our Day Will Come" wasn't necessarily political — but it resonated with listeners' feelings about the civil rights movement in 1963. Michael Ochs Archives/Getty Images hide caption