In a disquieting finding, jetlag proved lethal for older mice in an experiment conducted by Univ of Virginia researchers. Younger mice fared better. Frequent travelers and jet-setting corporate chieftains will likely take note as should those who work regular night-shifts. What can be done to combat the dangers of an internal body clock thrown out of gear? The Internet’s top health destinations (webMd, the major search engines, e-diets) are useful resources for those looking to minimize the dangers of what’s now recognized as a serious threat.