Last October, when the Metropolitan Museum of Art’s Costume Institute announced its next fashion show, “Superfine: Tailoring Black Style,” the political landscape looked very different.Kamala Harris, the first female vice president and the first Black woman ever to top...

China, the world’s clean-energy juggernaut, faces a rival right next door. And one of its top customers, no less.India, a big buyer of Chinese solar panels and electric vehicle batteries, is using a raft of government incentives to make...