The American Heart Association recommends eating just one teaspoon of salt a day, but one scientist claims that having more salt in your diet is actually healthier. We investigate. Plus, with serious questions about mercury levels, we decode which canned tuna to buy for both health and flavor.

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.