While everyone fixates on the U.S. election, developments in the world economy threaten to create problems for the next president and, possibly, trigger a major financial crisis. A little-noticed study by the International Monetary Fund (IMF) delivers the bad news. It finds that global debt — including the debts of governments, households and non-financial businesses — reached a record …

The past few weeks of revelations about Donald Trump should convince you of the utility of Twitter’s platform. It is the new news ticker, the way information gets spread at the speed of light by the fastest typists. But that’s merely the networked and mobile technology. If you want to know how valuable the company is, you must ignore the …

  Cheers rose from prominent voices around the world this month when almost all countries agreed to reduce the climate costs of international air travel. The United Nations and the White House applauded the deal, as did the airline industry and even some environmentalists. Yet the agreement hardly qualifies for the praise. It stands to do little to reduce carbon …