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, ...

What are 'blue slips' and why is Trump fighting to end them? Millennial therapist has 1 question for boomer parents—"Respectfully, why?" 'Ella McCay' is a huge mess. Can we pretend it never happened?

King Charles III reveals major cancer update in rare message Trump's approval rating plunges with Republicans on key issue Leadership of US command in Latin America changes hands amid criticism of ...