The humble egg is now a source of frustration for millions of shoppers around the U.S, who face soaring prices and shortages.

Shoppers in some parts of the country are finding empty egg shelves in their local grocery stores. And some grocery stores ...

Is there a difference between 'antibiotic-free' eggs and 'no antibiotics ever' eggs? What about 'vegetarian-fed' versus 'organic?' Here's what egg carton labels really mean.