Investigative journalist Karen Hao joins Ali Rogin to discuss her new book, “Empire of AI: Dreams and Nightmares in Sam Altman’s OpenAI," which delves into the company. Full Episode Saturday ...

Not so fast, says Eugenia Cheng in her new book, Unequal: The maths of when things do and don’t add up. In mathematics, as in life, some things are more equal than others.