X Chief Linda Yaccarino Says She Is Leaving the Social Media Platform

Participants at this year’s Joint Mathematics Meetings explored everything from the role of A.I. to the hyperbolic design of a patchwork denim skirt.

The new measures have been widely embraced, but new age-verification methods have drawn some criticism because of privacy concerns.

The semiconductor pioneer appointed Lip-Bu Tan, a well-known tech investor and executive, as its new leader.