Another gem from Quite Interesting, this time about lost languages:

There are about 6,900 languages being spoken in the world today. Unesco estimates that half of these will have disappeared by the end of the century as the languages of world commerce – English, Chinese and Spanish – spread. 

 And my favorite bit:

The last speakers of Zoque, a language from Tabasco, Mexico, are two elderly men who refuse to speak to one another. Relatives claim their mutual silence isn't motivated by personal animosity but by the fact that they have little in common.