Pollution. Overfishing. Abusive labor practices. There's a lot of negative news coming out about the seafood industry lately, and much of it breaks your heart. Today's show celebrates seafood we can eat because it's fished in a way that's humane and environmentally sound. Activists call it sustainable seafood. I call it three great reasons for firing up your grill. GRILLED OYSTERS WITH PROSCIUTTO AND PARMIGIANO; GRILLED SHRIMP TACOS; SICILIAN GRILLED SWORDFISH WITH SALSA VERDE.