The number has not been consistent throughout its existence. Russians use an alphabet based on the Cyrillic script. The modern Russian alphabet has 33 letters: 21 consonants, ten vowels and two signs.

Believe it or not, the capital A hasn’t always looked the way it does now. Ancient Egyptians wrote the letter upside down, creating a symbol that resembled a steer with horns. Learn the surprising ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Who created ...