According to the newspaper article that brought me to this site, languagediversity is to culture what biodiversity is to nature.
On the list of countries counting the most endangered languages
India is on top (196), followed by the United States (192) and Indonesia (147). The last speaker of Eyak, a language of Alaska died last year. So, you have the choice of 192 U.S. languages if you want to take one on. Which will it be? In my area I could choose Ripuarisch frown , a language spoken in Rhineland.