A new optical device allows researchers to generate and switch between two stable, donut-shaped light patterns called skyrmions. These light vortices hold their shape even when disturbed, making them ...

Abstract: Increasing urban congestion is a common problem in big cities all over the world. Some Adaptive traffic control (ATC) systems have been proposed to reduce the total travel delay time, which ...

Besides the current conundrum about the usefulness of owning a gasoline-powered vehicle of any sort, an emerging, less-volatile pre-war issue saw two other camps face off against each other: Button ...

The Ukrainian-made "Sting" and 'Salut' interceptor drone, as well as a new Ukrainian-made interceptor drone whose name has not yet been announced are seen on March 31, 2026 in Kharkiv, Ukraine.

Scientists have managed to trap beams of infrared light in a lattice of specially engineered atoms that's just 42 nanometers thick. That's around 2,000x thinner than a human hair or an even thinner ...

Skywatchers, it's time! If you live in certain parts of the United States you may have a chance to view the northern lights tonight. The aurora borealis will be most intense on Thursday, April 16, and ...

Abstract: A mixed traffic environment of manual driving and automatic driving will become the norm in future intelligent transportation systems. The deep reinforcement learning (DRL) method has shown ...