Businessman David Perdue defeated longtime Rep. Jack Kingston in a Republican runoff for Georgia's U.S. Senate nomination, setting up a general election matchup against Democrat Michelle Nunn. (July 23)
Dutch designers have built a prototype 'car' for fish. Equipped with a webcam, micro-computer and motorised wheels, the mobile fish tank utilises computer vision technology to track its fish driver's movements to get around. Jim Drury has more.