The loss of native languages is of course by no means unique to the northwest. See this list of extinct languages, or even more heartbreaking this list of recently extinct languages with (in many cases) the date of death of the last speaker.
But as is often the case with these maudling media stories, there is more here than meets the ear. Marie Smith Jones spent some of her last decades working with linguist Michael Krauss to record and document the Eyak language, and the language is being taught to Eyak youth through The Eyak Language Preservation Project. This Seattle Times obituary has additional information about Marie Smith Jones and the Eyak.
Map from the Alaska Native Language Center
(Most of the links above are lifted from this Metafilter post.)