Where are the most endangered languages in the world? February 21 is World Mother Language Day. Al Jazeera looks at the most spoken languages and which ones are endangered.Share this: Endangered monarch butterfly population surges 64 percentDateMarch 26, 2026In relation toAl-JazeeraUS exempts Gulf of Mexico oil drillers from endangered species protectionsDateMarch 31, 2026In relation toAl-JazeeraUNESCO places occupied West Bank, Lebanon sites on endangered heritage listDateJuly 24, 2026In relation toAl-Jazeera