$22.890.000.000.000. Almost $23 trillion’s worth of banknotes. That’s the value of sustainable investments, as it’s been recorded at the end of 2016, the latest year for which we have definitive data. These were published last March in the most recent edition of the biennial survey of the Global Sustainable Investment Alliance (GSIA),(1) a network of five different associations working in the field of responsible investments.(2) The survey pointed out that in two years the value of ESG bank transactions (Environment, Social, Governance) has grown by 25%: these represent the assets selected by investors across the Planet according to one or more sustainability criteria (including environmental, social and responsible management aspects).  This trend confirms a long-term...