Endangered and Extinct Languages of the Arctic
Alaska is the original home of two great American language families, Eskimo-Aleut and Athabascan-Eyak-Tlingit. Both families have spread far beyond Alaska with Eskimo-Aleut through Canada to Greenland and parts of Athabascan-Eyak-Tlingit almost to Mexico. In both cases, not only is the population greater at the extremes, but also the number of children speakers of these languages, who are the future of these languages. With the sole exception of Central Alaskan Yup'ik (St. Lawrence Island Yup'ik-minimal use of adolescents), presently, there are no children speaking any of the other Native languages in Alaska (or nearby Chukotka or Yukon Territory).
At the same time, as follows from the "original homeland" claim above, the great depth of diversity in both of these families is in Alaska and immediately neighboring Russia and Canada, henceforth simply [greater] "Alaska." All of the Aleut and Yup'ik and all of the Tlingit and Eyak, are entirely in Alaska; merely a part of Inuit and a part of Athabaskan have spread beyond. However, in population of those two part-branches, at most 17% of Inuit and 4% of Athabaskan remain in Alaska, and of the speakers, at most 1.7% of Inuit and 1/2% of Athabaskan are in Alaska. Of children speakers of those two part branches, as implied above, the figure is 0%.