Goodbye to lithium? The new sodium battery, safer and more economical, promises more than 5,000 hours of useful life.

Anyone who’s been told to try a low-sodium diet knows that cutting back on sodium can be a real challenge. It’s often not enough to put down the salt shaker; it’s also a matter of reading nutrition ...

Sodium is everywhere in our diets. We asked experts for the bottom line on its health risks. By Alice Callahan Without sodium, you wouldn’t be able to survive. Nerves would fail to fire; muscles ...