When [Electron Impressions] used a powerful ultrasonic array to project a narrow beam of sound toward a target, he described it as potentially useful in getting someone’s attention from across a ...

A team from the Faculty of Physics and the Center for Quantum Optical Technologies at the University of Warsaw has developed a new type of all-optical radio receiver based on the fundamental ...

Current global climate models (GCMs) support with high confidence the view that rising greenhouse gases and other anthropogenic forcings account for nearly all observed global surface warming—slightly ...

Grok 3 has caught up with its competitors, but is it enough to convert ChatGPT users? Credit: Matteo Della Torre / NurPhoto / Getty Images Now that Grok 3 from Elon Musk's xAI is officially live, how ...