1. 94% of the world’s languages are spoken by only 6% of the population. the top three most-spoken languages (in order of most to fewest) are mandarin, spanish and english. 133 of the world’s languages are each spoken by fewer than 10 persons. 473 languages are currently listed as endangered. link

2. hebrew was a dead language at the beginning of the 19th century, but was revived by israeli jews. link

3. approximately 20% of the young women in 18th-century london, england, were prostitutes. link