Mathematicians are still trying to understand fundamental properties of the Fourier transform, one of their most ubiquitous and powerful tools. A new result marks an exciting advance toward that goal.

Dozens of doctors and therapists said chatbots had led their patients to psychosis, isolation and unhealthy habits. By Jennifer Valentino-DeVries and Kashmir Hill Julia Sheffield, a psychologist who ...

Acesulfame potassium is an artificial sweetener (also known as Ace-K). Artificial sweeteners have been controversial because of possible health risks. But some of these sugar substitutes offer you a ...