The heat is on... and so is the sunscreen. By now we all have a checklist for sun safety. Apply sunscreen before leaving the house. Sport a hat or visor when in the sun. Wear cover-ups on a regular basis. Avoid being outside during peak hours. Stay out of tanning beds. But it's not just what you're putting on your body, but in your body as well. New research shows that there are actually foods that prevent...