Lack of Genetic Diversity

Ancient volcano's devastating effects confirmed
73,000 years ago, global temperatures dropped by as much as 28 degrees

The headline above is from this recent MSNBC article. Many of the dates are rendered from the accepted geological norms founded in Lyell's geology and refined since that time in many and various ways, including the circular evidence of fossil layers (which date the rocks they're found in, which date the fossils in the rocks - are you dizzy yet?) and various forms of radioisotopic decay. An excellent treatment of these subjects from a Christian viewpoint can be found in Ian T. Taylor's book "In The Minds of Men" referred to previously on this blog here, here and here.

What grabbed my attention in the article was the following paragraph:

"The lack of genetic diversity among humans alive today suggests that during this time period humans came very close to becoming extinct."

Given that I disagree with the way modern evolutionist scientism dates things, I have no difficulty in understanding that the lack of genetic diversity in human beings today results from a catastrophe of another type - that of the global Noahic flood of about 5, 000 years ago, when only Noah, his wife, his three sons and their wives survived to populate the earth. That'll mess with your genetic diversity a fair bit!