personnel in the past two months. what is considered a major medical breakthrough? a texas construction worker who was disfigured has undergone the first full face transplant. massachusetts doctors gave the 25-year-old a new forhead, nose and lips complete with muscles and nerves that give him sensation. two american tourists died after visiting massive waterfalls in argentina. they were in a boat that flipped over sending them to the returning water at the base of the falls. several others were rescued. "news week" magazine gave the u.s. citizenship test to americans. 29% couldn't name the current vice president. 44% couldn't define bill of rights and 73% couldn't say why