beekeepers are finding the frames are empty, even when the weather is good and plenty of food is on hand. scientists believe it could be the result of a natural phenomenon or poor nutrition or pesticides. but when they try to figure out what s going on, farmers and bee keepers are growing increasingly nervous. while their hives look healthy, they can t be certain their bees won t suddenly fly off and die. they put the roafl these tiny poll d they put the role of these tiny mol nateors into purchase prospective. if you don t get them visits you are not going to get that watermelon. reporter: bee keepers are doing a great job of rebuilding their colonies. there have been enough bees