Some messaging systems delete messages as soon as they ... This is a good form of communication if you want to see and hear people in different locations.

The safety of students and staff are of paramount importance, making the design and implementation of effective communication systems beyond the push of a button a critical priority for schools.

Whether we are examining how moths attract a mate, ground squirrels convey information about nearby predators, or chimpanzees maintain positions in a dominance hierarchy, communication systems are ...