This revealing article has a few revelations: disgust is good for you, physical disgust and moral disgust are linked, and (my favorite) "societies with high pathogen risk tend to be societies that have a greater number of religions, they're more close knit, have more socially conservative rules and are more xenophobic."

Cleanliness is next to godliness!

(So what to make of The Stranger's resident atheist/germaphobes?)