Not long ago I received an urgent phone call from a patient, a 67-year-old investment broker, anxiously asking, "What's with this high potassium value? Should I make out my will?" Under a new federal ...

Classic towers, sleek all-in-ones, space-saving mini PCs: Today's desktops pack neater designs and more value than ever. See our recent favorites based on our deep-dive reviews, plus all the shopping ...