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, ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

The Light Bowgun can fire ammunition by hitting or holding R2 (RT). You can change your ammo type by holding L1 (LB) and hitting either Triangle (Y) or X (A) to cycle through your available ammo types ...