Hadron Collider, Russia

Traced back to the Christianization of Kievan Rus' in the 10th century, Russian Orthodoxy is the dominant religion in the country; approximately 100 million citizens consider themselves Russian Orthodox Christians. 95% of the registered Orthodox parishes belong to the Russian Orthodox Church while there are a number of smaller Orthodox Churches. However, the vast majority of Orthodox believers do not attend church on a regular basis. Smaller Christian denominations such as Catholics, Armenian Gregorians, and various Protestants exist.
Estimates of the number of Muslims in Russia range from 7–9 million by the local sources to 15–20 million by Western and Islamic sources. Also there are 3 to 4 million temporary Muslim migrants from the post-Soviet states. Most Muslims live in the Volga-Ural region, as well as in the Caucasus, Moscow, St. Petersburg and Western Siberia.
Buddhism is traditional for three regions of the Russian Federation: Buryatia, Tuva, and Kalmykia. Some residents of the Siberian and Far Eastern regions, such as Yakutia and Chukotka, practice shamanist, pantheistic, and pagan rites, along with the major religions. Induction into religion takes place primarily along ethnic lines. Slavs are overwhelmingly Orthodox Christian, Turkic speakers are predominantly Muslim, and Mongolic peoples are Buddhists.