Texas has carried out its 500th execution and the first in the United States of a female prisoner in nearly three years. Kimberly McCarthy was executed for the 1997 murder of a neighbor. She won a reprieve earlier this year as lawmakers considered a bill affecting the composition of juries. McCarthy, who was black, was convicted by a jury of 11 whites and one African American. Defense attorneys say the jury was improperly selected on the basis of race.