Bret Taylor, the chairman of OpenAI’s board, said the artificial intelligence company was “not for sale.” Mr. Musk is separately raising money for his A.I. start-up, xAI. By Cade MetzMike ...

In “Summer of Fire and Blood,” Lyndal Roper tells the story of the serfs who fought for a better life and the elites who co-opted their movement. By Thomas Meaney Tell us a few things about ...