To understand this nasty and nutty campaign, you have to go back to 1973, which is before roughly 60 percent of today’s Americans were alive. The backward trip in time illuminates how the United States and, indeed, most advanced nations, became addicted to rapid economic growth and how this, in turn, polluted our politics. It bred disillusion and disappointment. …

Under securities law, a publicly disclosed half-truth is worse than no truth at all, according to an appeals court opinion filed this week involving Arena Pharmaceuticals Inc. The decision has an intuitive moral appeal. But it’s not at all clear that it makes sense from the standpoint of investors, who might be misled just as thoroughly by failure to disclose …

  Because Brexit isn’t risky enough, apparently, Britain’s Conservative government has decided to embark on another project fraught with potential for failure. For many years, the country has been arguing furiously about a big expansion of London’s Heathrow airport. Having once opposed the idea, the Tories say they are now in favour. Prime Minister Theresa May is right: Heathrow needs …