5 - apaq qar (Uyghur)
Literally "pure white snow." Uyghur, a Turkic language, is spoken mainly in Xinjiang, the westernmost province of China. Uyghur is spoken by about 10 million people.
4 - vtsi (Cherokee)
Cherokee, an Iroquoian language, is spoken by about 15,000 people primarily in North Carolina and Oklahoma.
3 - huka (Maori)
Maori, an Austronesian language, is spoken by about 150,000 people, primarily in New Zealand.
2 - ergh (Cornish)
Cornish, a Celtic language, was spoken in Cornwall. Extinct since the 1700s, it is enjoying a small revival.
1 - elur (Basque)
Basque is one of the most fascinating languages still spoken because linguists have never been able to show any relationship between it and any other spoken language. It is spoken by more than 600,000 people in southern France and northern Spain.