Christopher Wanjek is the author of the health books "Bad Medicine" and "Food At Work" and the novel "Hey, Einstein!" a comical nature-versus-nurture tale about raising clones of Albert Einstein in less-than-ideal settings. His column, Bad Medicine, appears regularly on LiveScience.
Some retractions are linked to innocent mistakes, such as an accidental mislabeling of data or images that leads the researchers to an erroneous conclusion. Other retractions reflect a serious lapse in ethics or common sense.
Fast-food restaurants' claim of having healthy menus falls flat in a new analysis showing that they are only marginally healthier than 14 years ago.