51.   A new study says teen-agers should be on the same heart-healthy diets as adults.

52.   A new study says unilateral economic sanctions rarely work.

53.   A principal reason rent control does not work, the study said, is because it reduces the supply of apartments available.

54.   A Mexican college graduate is less likely to acquire citizenship than a high school dropout from China, the study says.

55.   A much smaller percentage of consumers will sign up for interactive TV in coming years, the study said.

56.   A new study says Americans eat more healthful meals at home than in restaurants.

57.   A new study says homicides may be linked to high levels of lead in the air we breathe.

58.   A new study says no.

59.   A new study says peanuts may be good for your heart.

60.   A new study says probably so.