Environmentalism as secular religion (Score 1)

You once wrote that "Environmentalism has replaced socialism as the leading secular religion". I originally resisted this notion, but I've come to think that you are correct. Where did you first hear about this idea? (I've since noticed that there are whole books on the subject, say by Robert Nelson.) Does this help explain why skepticism is such a heresy? After all, one of the biggest religious sins is the sin of disbelief.