A United Airlines flight was allegedly delayed for four hours after a passenger smoked cannabis in the plane 's toilets. Flight UA1679 was due to take off from San Francisco airport to Cancun in Mexico on 5 August, but was delayed at first due to administrative issues.

What Happened? A number of stocks fell in the morning session after markets continued to decline, as investors grew cautious ahead of a key speech by Federal Reserve Chair Jerome Powell. The move came as U.

United Airlines has grounded flights nationwide on Wednesday night due to an issue with its weight and balance computer system.

United Airlines' venture capital arm said on Wednesday it has invested in aerospace startup Astro Mechanica, which develops airframe designs and propulsion systems for supersonic aircraft, signaling renewed industry interest in ultra-fast jets.