Christopher Wanjek is the author of the health books "Bad Medicine" and "Food At Work" and the novel "Hey, Einstein!" (www.amazon.com/Hey-Einstein-novel-nature-nurture/dp/0615650503) 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.
Injections of growth hormone — a staple of anti-aging, hormone-replacement therapy — may have the opposite effect as intended, thwarting a person's quest to live to an advanced age, a new study suggests.
Scientists say that the two great bubonic plagues — the Black Death (14th century) and the Plague of Justinian (6th century) — aren't connected after all, and were caused by different bacterial strains.
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.