1. The Eyak language was spoken near the mouth of the Copper River in Alaska up until about two days ago. January 21 was the day that Marie Smith Jones died, the last known full-blooded Eyak and the only person known to be fluent in the language. She tried to help preserve it by creating a dictionary so others could learn it someday. Although Marie had nine children, none of them learned the language because it was considered improper to speak anything but English at the time.
Learn more about the other 9 languages at mental_floss.