A new bug in WhatsApp is causing major issues for some users, leaving them unable to use the app due to a green screen glitch ...

Widely used in the early days of mainframes and minicomputers, as well as in the days of DOS, the character-based green screen gave way to the graphics-based interfaces of Windows and Mac.

But what if you have limited space? [Fred Emmott] had about 30 inches behind his desk to work with, and shares what it took to make a green screen work reliably in a limited space. Even (and ...