The theory of evolution explains how and that we are cousins of the great apes (not descendants from them) and cousins of all other species. This is a very simple idea that many people struggle with nonetheless.

"Cousins" is meant in a very real sense. New species emerge over the course of thousands of generations, and if you trace your family tree back far enough (were we privy to such information) we could trace the exact familial relationship.

Of course, genealogical...