The Environmental Protection Agency has begun for the first time to regulate a class of synthetic chemicals known as “forever chemicals” in America’s drinking water. Kim Tingley, a contributing writer for The New York Times Magazine, explains how these chemicals, which have been linked to liver...

A Times investigation shows how the country’s biggest technology companies, as they raced to build powerful new artificial intelligence systems, bent and broke the rules from the start. Cade Metz, a technology reporter for The Times, explains what he uncovered. Guest: Cade Metz, a technology...