My friend Al sent along this link with the comment: Take away the wild and foolish speculation and it’s an interesting article.

I agree.

Do these mysterious stones mark the site of the Garden of Eden?

UPDATE: G.M. Grena, in the comments below, suggests a much more sensible article:

http://www.saudiaramcoworld.com/issue/200902/the.beginning.of.the.end.for.hunter-gatherers.htm (short link: http://tinyurl.com/c8tvtd)