Approximately one language is lost every couple of weeks when its last speakers die and no one else on earth can pass it along to future generations according to the Living Tongues Institute for Endangered Languages and the National Geographic Society.

They say we are losing indigenous languages at an alarming rate. Experts say an estimated 7,000 languages are spoken today but 80% of the world's residents speaks the 83 most widely used languages whereas the 3,500 smallest languages account for just 0.2 percent of the world's people.

Language Hotspots Linguistics - University of Arizona