Having the world's youngest population, the Islamic Republic of Iran bears the responsibility of educating more than 18 million students at segregated schools.
There is a vastly extended network of rivers in Iran most of which seasonally are filled with water. Some permanent rivers run from the Alborz or the Zagros to the Caspian Sea, Persian Gulf and Oman Sea.
Christmas in Iran is known as the Little Feast. For the first 25 days of December, a great fast is observed, during which no meat, eggs, milk, or cheese is eaten.