How do you know that in 24 years so many languages will be dead?
Depending how you count there is between 3 000 to 8 000 languages.
Sometimes the line between dialect and language is thin. There are other things too like geogrphy, politics and religion
There is a list of the languages in the world and one count on 6 500 living languages. For 6 ooo of them 52% is spoken by less than 10 000, 28% less than 1000.
So you really think that of the rest 40% there will only be a dozen in 24 years.?