After a couple of weeks talking about Isaac Asimov, and how cool he is, the hope and dangers of neuroscience, and the humanities (whew!), I’m back to statistics on religion. This time, I’m looking at the Association of Religion Data Archives (ARDA), which is like a large warehouse full of information about religion. It’d take years to really explore this site. For example, they have stats on thirty different branches of the Pentecostal Church in the US, which is one of twenty Christian denominations in the US, which is one of 196 nations in the world. Like I said, it’d take a while to explore it all.