This site describes how colors affect emotions. And what colors evoke which emotions. It gives an example of when colors affects a work environment. And it describes events where this information would be applicable.
This website addresses what sign language is, how ASL compares to sign language in other countries, where ASL came from, how ASL compares with spoken English, how children learn ASL, and what research is being done now.
Imagine traveling to the next state, or even the next town, and not being able to converse with others. This is how it was for the deaf until ASL (American Sign Language) was formed in 1841. This tells of the history of ASL.