Parallel economies and their currenciesMany parallel economies (with their currencies) have flourished in the past and still exist today. Their principles and benefits – often overlooked by economists – are worth learning through historical and modern examples. In continuation, could an innovative parallel economy fit in our society?to reduce inequalities... and contain global warmingAs the middle class is hurting, especially in rural America, could a parallel economy help the underprivileged and win over everyone?Could the last chapter's Green-Market System work? To be successful, such a System must create jobs with good wages... and convincingly cut down CO2 emissions. Would this System be too good to be true?