Behind the Bahá'í faith, one of the fastest growing new religions In our World of Worship series, we're exploring different ways people practice faith and religion around the globe. In this installment, we're looking at one of the fastest growing religions in the world, the Bahá'í faith. There are now more than 100,000 Bahá'í communities worldwide. Dana Jacobson takes you on a journey to the "Mother Temple of the West."