US Business

California investigators have concluded that a PG&E transmission line set off a wildfire that charred Sonoma County last fall, even as the utility was cutting off power to millions to reduce the risk that it would spark fires.

Looming layoffs at airlines have unions and some lawmakers pushing for more government aid to the industry before an Oct. 1 cutoff.

American Airlines Group and JetBlue Airways announced an alliance that the carriers said would speed their recovery from the pandemic-driven travel downturn by boosting their position in large Northeast markets.

U.S. retailers are on track to close as many as 25,000 stores this year as the coronavirus pandemic upends shopping habits.

Apple was also apparently hacked. It was latest in a series of security failures on the social-media platform.

Walmart and Kroger will require customers to wear face coverings inside all their U.S. stores, joining a growing chorus of big businesses and state leaders deciding that masks are needed to battle the surge in coronavirus cases.

The airline told tens of thousands of employees that their jobs are at risk after federal aid expires Oct. 1, as air-travel demand falls again amid climbing coronavirus infections.

Capacity restrictions, stringent cleaning protocols, conflicting guidance from authorities at different levels of government and concerned clients have damped reopenings in California.

Before it unraveled, German payments company Wirecard spewed out news releases publicizing partnerships with blue-chip names such as SAP and SoftBank. Some of those announcements were misleading or were promoted without the agreement of the companies involved.

A new U.S.-funded trial would seek 30,000 subjects and could deliver an answer by year-end about whether the vaccine induces immune responses sufficient to protect people safely.