A new study warns 1,500 endangered languages could no longer be spoken by the end of this century.

The study, led by The Australian National University (ANU), identified predictors that put endangered languages at high risk.

Co-author Professor Lindell Bromham said that of the world’s 7,000 recognised languages, around half were currently endangered.

«We found that without immediate intervention, language loss could triple in the next 40 years. And by the end of this century, 1,500 languages could cease to be spoken.»

Published in Nature Ecology and Evolution, they study charts the widest range of factors ever putting endangered languages under pressure.

One finding was that more years of schooling increased the level of language endangerment. The researchers say it shows we need to build curricula that support bilingual education, fostering both indigenous language proficiency as well as use of regionally-dominant languages.

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