Among these miracles alleged by enthusiasts of the movement to be found in the Quran are everything, from relativity, quantum mechanics, Big Bang theory, black holes and pulsars, genetics, embryology, modern geology, thermodynamics, even the laser and hydrogen fuel cells. Widespread and well-funded with millions from Saudi Arabia, the literature can be found in Muslim bookstores and on websites and television programs of Islamic preachers, though it has come in for criticism by scholars.