It would be interesting to know what percentage of our neighbors take the Book of Genesis literally and believe that the Earth is 6000 years old.

I suppose it depends on what we mean by “neighbors” and/or where we live, and therefore, who our neighbors actually are. If you’re in rural Mississippi, the answer will be far different than if you’re in Manhattan or San Francisco.

In any case, I grant that beliefs like this, i.e., those that require a wholesale dismissal of science, are frightening indeed.  If you want to know how it’s possible that so many Americans are anti-vaxxers, climate deniers, and Trump supporters, this gives you a pretty good insight.

The Age of the Earth