An international alphabet, the tongue-twisters of click languages, language chains across continents, and the five million dollar comma.
Xhosa, one of the most famous African click languages, has some pretty spectacular tongue-twisters.
The International Phonetic Alphabet is an attempt to provide a symbol for every meaningful sound in human language.
Imagine a chain of people, each speaking the same language as their neighbour, stretching across a continent. The people at either end of the chain could be using completely different languages.
A misplaced comma once cost a shipping company five million dollars.
For more trivia about strange sounds, extreme words, curious writing, and lost languages, begin here: