Why are Europeans the whitest people on the planet?
Ultimately this is the sort of thing that is utterly fascinating to me, but since a) it gives me no reason that I _shouldn't_ believe it (corollary: mentions no competing viewpoints), and b) I have no expertise at all in the field, I have to assume that I shouldn't go around telling everybody that I know why Europeans are the whitest people on Earth, just yet.<p>The one presented fact that I'm _not_ totally solid on is, I'm not sure that prehistoric and ancient art are sufficiently solid to provide a date by which we can assume Europeans were white.