‘We don’t do write-downs,’ Exxon Chief Executive Rex Tillerson told trade publication Energy Intelligence last year…. Mr. Schneiderman’s office, which has been probing Exxon’s past knowledge of the impact of climate change and how it could affect its future business, is also examining the company’s accounting practices, according to people familiar with the matter. An Exxon spokesman declined to comment about the investigation by the Democratic attorney general but said Exxon follows all rules and regulations. Since 2014, oil producers world-wide have been forced to recognize that wells they plan to drill in the future are worth $200 billion less than they once thought, according to consultancy Rystad Energy. Because the fall in prices means billions of barrels cannot be economically tapped, such revisions have become a staple of oil-patch earnings, helping to push losses to record levels in recent years. Exxon hasn’t taken any write-downs—the only major oil […]