Researchers have built a small-scale computer that runs on thermal noise, the random electrical fluctuations that conventional chip designers spend billions trying to suppress. The device, called a ...

Artificial intelligence is weighing into art history debates by “authenticating” masterpieces and exposing alleged fakes. But experts aren’t convinced.

Josh Payne, the chief executive of Nscale, raised $2 billion from investors. Sheryl Sandberg, the former Facebook executive, ...