Islam is a large religion exerted on Earth. Its sacred text called the Quran, and their followers call themselves Muslims. Some groups, including Taliban and Al-Qaeda follow an extremist view of Islam. Islam, among Earth's other major religions, mentioned by Dr. Elizabeth Weir in 2005 as part of an unsuccessful negotiations with Chaya Sar to allow Atlantis expedition refuge in her home planet. The expedition also seems to have brought some kind of a Quran with them to Atlantis, as Chaya read one. (SGA: "Sanctuary", "Phantoms")