Stress, I’ve long suspected, may explain why lifespans have been lengthening for high-income Americans but have remained the same or even shortened for low-income and middle-income people. A new analysis from the Hamilton Project released today adds important evidence: Biomarkers of stress have risen much more rapidly for low-income people than for high-income ones. The most recent national data …

  Bloomberg JetBlue Airways Corp. plans to reduce annual costs by as much as $300 million by 2020 after efforts to boost revenue over the past two years have done better than the company expected. The largest share of savings — as much as $125 million — will come in aircraft maintenance operations, with additional cost reductions being generated by …

  BEIRUT / Reuters European planemaker Airbus and Iran Air will finalise a deal to buy aircraft in two weeks, the head of Iran’s flag carrier said, adding Airbus has agreed to provide financing for 17 planes. Uncertainty over financing of the deal and political opposition in the United States against Iran have slowed down Tehran’s efforts to import aircraft …