Religion, throughout much of the world, is fading.----That' s what author Ronald Inglehart' s book, Religion' s Sudden Decline: What' s Causing it and What Comes Next, tells us.----Professor Inglehart has based his conclusions on a massive study' -The World Values Survey, which tracks responses to people in 100 societies representing 90% of the world' s population. It' s a study that they' ve been doing the past forty years.