The “locavore diet” originally focused on supporting small farms and protecting the environment, says the blog Triple Pundit, however, large grocery store chains and big box discount stores are now writing their own definitions of “local.”

Their definitions include:

• Grown and sold in the same state - Walmart
• Grown within an eight-hour drive of the store - Safeway
• Grown within one day’s drive - Whole Foods
• Produced either in that state or that region of the US - Krogers
• Grown in regions as broad as four or five states - Supervalu (Albertsons,...