Eskimo-Aleut

The researchers also study how these ancient peoples are related to modern populations who speak Eskimo-Aleut, Na-Dene and other languages.

This tangled family tree underpins the ancestry of modern speakers of indigenous Na-Dene and Eskimo-Aleut languages.

With the exception of the Eskimo-Aleut language family of the American Arctic and the Na-Dene language family of Alaska, northwestern Canada, and the U.S.

Plenty, as Sandra Bullock dodges flying space junk, wrestles with knotty parachute tethers, regrets her inability to speak Eskimo-Aleut, feels the G-force of explosive decompression, and splashes down into the primeval mud.

Eskimo-Aleut speakers derive more than 50% of their DNA from what the researchers call "First Americans", and the Chipewyan around 90%.