In this TED talk, physicist and poet Suzanne Talhouk makes a powerful case for preserving language diversity: without preserving words and phrases specific to a certain language, we lose the memories and associations that are unique characteristics of that tongue. Talhouk focuses primarily on creativity as a unique characteristic of a given language, and how different languages also have different kinds of creativity. This is a great video for answering the question of why diversification of languages is crucial to the developing world! Warning: this talk is completely in Arabic! The TED subtitle crew is fantastic and the english subtitles are great, however.
Find her TED speaker bio here.