The reference frames from which observers view quantum events can themselves have multiple possible locations at once — an insight with potentially major ramifications. Imagine standing on a railway ...

The original version of this story appeared in Quanta Magazine. Imagine standing on a railway platform watching a trolley go past. A girl on the trolley drops a bright red ball. To her, the ball falls ...

Getting 5G communications right is of critical national importance and is no easy task by any means. 5G could be the first significant technological, economic, and policy challenge of the 21st century ...