Businesses across the US are begging people to put spare change into circulation amid shortage
                                
                                
                                    (Newser) -
                                    Got a dime you can spare? Retailers, laundromats, and other businesses that rely on coins want you to turn it in, along with any other  spare change in piggy banks  or under couch cushions, as coins are in short supply again, the  AP  reports. A group of trade associations that...