Don't you hate it when you go to the store, pick what looks to be the perfect peach or tomato, you bring it home, cut into it and discover it is not ripe! Or that it is too ripe!  Well, a University of Arizona professor has created a RediRipe sticker that will be available to growers this coming year and we should see in the stores on our fruits in a couple of years.  These stickers measure the amount of ethylene gas which is released as fruits ripen. They will become darker and darker blue as the fruit gets riper and riper! What will they think of next?