“El Mencho” was the longtime head of one of the nation’s most powerful cartels. Armed groups set fire to cars and buildings across Mexico in the wake of his death. By Jack Nicas and Paulina Villegas ...

Mr. Ford is an essayist and a technologist. On weekday evenings, heading home on the subway from Union Square in New York City, I log into an A.I. tool from my phone and write a prompt. “Look at the ...