The mask rule on planes and public transportation has been targeted by the travel industry and Republican lawmakers. In the end, it was brought down by a little-known nonprofit, a conservative judge and chance.

The United States spent more on its policy response than other advanced economies. Now economists are revisiting how that worked.

Mr. Buffett has pushed back against investors who want to force Berkshire Hathaway to do more to reduce greenhouse gas emissions.

The deal with Abry Partners is the latest example of private equity’s pushing into Hollywood to cash in on the demand for streaming shows.

The world’s richest man succeeded in a bid to acquire the influential social networking service, which he has said he wants to take private.

China is meddling with free enterprise as it hadn’t in decades. The results are familiar to those old enough to remember: scarcity, and the rise of black markets.

Workers say they have been left largely in the dark about what a sale to the billionaire will mean for them and their shares in the company.

His role as Barbara Walters’s on-air partner lasted only two years, but viewers knew him for three decades as a correspondent, anchor and TV host.

Twitter’s 11-member board met on Sunday morning to discuss Mr. Musk’s offer to buy the company and take it private.