Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Vaughn Jordan doesn’t have childhood memories of playing pinball, pumping quarters into a machine at an arcade or some random 7-Eleven. His entry into pinball was much more recent, during the pandemic ...

NASA has announced when the longest total solar eclipse of the century will occur—and you won’t have to wait long. Here’s what you should know. According to NASA's solar eclipse calendar, the longest ...