The starkest warnings about the coming apocalypse are coming not from long-haired hippies, but from Wall Street bankers in three-piece suits. This is not another screed from an environmental fanatic predicting the end of the world; this is a discussion about the collapse of the business case for investments in coal export infrastructure.The starkest warnings about the coming apocalypse are coming not from long-haired hippies, but from Wall Street bankers in three-piece suits. This is not another screed from an environmental fanatic predicting the end of the world; this is a discussion about the collapse of the business case for investments in coal export infrastructure.