Associated Press WATSONVILLE, Calif. — Shoppers browse store displays brimming with succulent tomatoes and plump strawberries, hoping to enjoy one last round of fresh fruit before the Western growing season ends. There is no hint of a dark side to the blaze of red. But strawberries are a painful subject for Guillermo Ruiz. The farmworker believes his headaches, confusion and vision trouble stem from a decade of working in the fields with methyl bromide, a pesticide that protects the berries with stunning efficiency. Cheri Alderman, a teacher whose classroom borders a farm, fears her students could inhale a dangerous whiff...