Business Spectator: As the former head of a financial research team, I recall dealing with an exposure to a brown coal-fired power generator. At the time, evidence was mounting that climate change impacts were quite likely, but they seemed to be far enough into the future not to worry us that much. Our debt exposure to the power generator did not mature until 2027; and who could predict what might or might not happen over that period of time? For this investment, it wasn`t so much the physical effects of …