ST. LUCIE COUNTY — Flavia Zambon bit into a corner wedge of an experimental grapefruit hybrid that her lab cultivated. “It is tangy, with the bitterness characteristic of all grapefruits. But you can ...

One of the best ways to use these leftover citrus peels is to zest and sprinkle them over a freshly prepared seafood recipe.

Sure, starting off your day with a halved grapefruit or a glass of its tart juice can be a healthy choice—lots of vitamin C and potassium—but if you take certain drugs, it might actually be just the ...