Ticuna (ISO: tca) is a language isolate spoken in the northwestern Amazon Basin (Brazil, Colombia, Peru). Ticuna has more speakers than almost all other Indigenous Amazonian languages and -- unlike most languages of the area -- is still learned by children. Yet academic linguists have given it relatively little research attention. Therefore, to…

The Pacific Coast Athabaskan (PCA) languages are part of the Athabaskan language family, one of the most geographically widespread in North America. Over a millennium ago Athabaskan-speaking groups migrated into northwestern California and southwestern Oregon from a northern point of origin several hundred miles away, but even after several…