The challenge sounds easy. Can writer Carey Jones avoid consuming any corn, or products that contain corn, for a week?The real question is how much would she actually have to change her diet? Not many of us eat corn every day in its original stalk or cob-form. Cornbread probably isn't on the menu unless you're enjoying barbecue, and sadly, grilled corn has not caught on as a street food yet in Kansas City. But it gets harder when you think about having popcorn as a snack or sodas sweetened wi