Green screens are used to add backgrounds to your favorite movies and TV shows, but why are they green? Here's an explanation ...

(2) A computer terminal that displays green characters on a dark background. Widely used in ... 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 ...