Here's what you need to know before you make your next sandwich. It's a trusted, easy, go-to lunch. A few pieces of bread, some mayo, dijon, celery, and a simple can of tuna. Or so you thought. As you ...

Forbes contributors publish independent expert analyses and insights. Liz writes about the ocean and its protection. The United States pioneered use of the “dolphin-safe” tuna label in the 1990s.