Abstract: Antenna arrays are widely acknowledged for their exceptional directionality and spectral efficiency, pivotal in modern wireless communication technologies. Numerous innovations have emerged ...

IDAHO, USA — Families needing care for a child or spouse with a disability say they cannot find anyone to help. "It's been a struggle because while this is real life, it was simpler for two years," ...

The original version of this story appeared in Quanta Magazine. Imagine that someone gives you a list of five numbers: 1, 6, 21, 107, and—wait for it—47,176,870. Can you guess what comes next? If ...