Bloomberg Oil prices gained for a second session, building on the biggest one-day gain in five months, amid glimmers of optimism among bulls that the Delta coronavirus variant’s hit to demand may be passing. Brent futures topped $70 a barrel, after falling below that level last week, when the market underwent its longest sell-off in years on concern about demand …

Bloomberg The Delta variant of Covid-19 is scything through aviation just as key markets were getting back on their feet. In the US, Southwest Airlines Co is blaming the Delta strain for a rash of cancelled bookings and a slowdown in demand that may push it and several others to quarterly losses. After leading the industry’s recovery for much of …

Bloomberg US aviation regulators are opening a new review of Boeing Co after a survey of company engineers found a sizable percentage said they couldn’t raise safety concerns without interference. A survey conducted by the Federal Aviation Administration (FAA) from May through July found that 35% of Boeing employees raised issues of conflicts of interest and a lack of independence, …