Chimpanzees have shown the ability to learn sign language.

The most spoken language is Mandarin Chinese — with over 1.1 billion native speakers.

Constructed languages (conlangs) like Tolkien's Elvish are linguistically complete — with grammar, vocabulary, and literature.

British English and American English diverged significantly after 1776 — American English preserved older British forms.

Language diversity correlates with biodiversity — the same conditions that support species richness also support linguistic richness.

Morse code is still in use in aviation and amateur radio today.

The world's shortest alphabet, Rotokas, has only 12 letters.

The most translated book in history is the Bible — available in over 700 languages.

The Japanese concept 'komorebi' means sunlight filtering through leaves — English has no equivalent word.