Professor invents 'ripeness' sticker (AP)

16 minutes ago TUCSON, Ariz. - A University of Arizona professor has invented a sticker that can tell consumers if a fruit or vegetable is ripe. The stickers will be available to growers next year and should make their way to supermarkets within two to three years, said Mark Riley, a UA assistant professor of agricultural and biosystems engineering. He said growers and grocers throw out thousands of bushels of fruit each year because it ripened faster than it could get to market or be sold. With ...