I think a copy of Sam Harris's Letter to a Christian Nation ought to be available, for free, to anyone who wants one; but especially to children. We probably can't do much to change the ideas of millions of religious adults, but we certainly ought to expose as many children as possible to the idea that their parents might just possibly be delusional lunatics when it comes to the idea of "god". Planting that idea in the minds of as many kids as possible is the one thing that I think might avert a future religious-ideology-driven apocalypse.