The "Powers" in Vernor Vinges' Universe

Marketing calls our current visitor ‘Old One.’” He smiled. “That’s something of a joke, but true even so. We’ve known it for eleven years.” No one really knew how long Transcendent beings lived, but it was a rare Power that stayed communicative for more than five or ten years. They lost interest, or grew into something different—or really did die. There were a million explanations, thousands that were allegedly from the Powers firsthand. Ravna guessed that the true explanation...

 Effects of Smoking on the Fetus

Most women also realize that smoking is bad during pregnancy. Unfortunately, it can be a very hard habit to give up, even for the best-intentioned parent. Smoking is not as detrimental to fetal brain development as heavy alcohol drinking, but it acts on many other organ systems. like the heart and lungs, that compromise the baby's health in a lasting way. Babies born to heavy smokers are substantially smaller than babies born to nonsmokers, averaging about half a pound lighter. In fact, smoki...