Machine provides 'lower prices, safety, anonymity,' says inventor
                                
                                
                                    (Newser) -
                                    Always on the leading edge, LA is now the first city to have 24-hour medical marijuana vending machines. The bulky black boxes scan patrons' fingerprints and a prepaid card, dispensing neat green envelopes of pot. The machines provide "convenient access, lower prices, safety, anonymity," the inventor tells the...