How can the L.A. Dodgers be scheduled to play the L.A. Angels in August of 2014 if they are in different leagues?

The Los Angeles Dodgers and the Los Angeles Angels play in different leagues—specifically, the Dodgers are in the National League and the Angels are in the American League. However, Major League Baseball has an interleague play schedule that allows teams from different leagues to compete against each other during the regular season. This means that the Dodgers and Angels can face off in certain designated games throughout the season, including August 2014.