[marsh2]

There was a program on Discovery a few nights ago. Some geneticists were talking about a bottleneck that happened in human populations at one time thousands of years ago when the entire population of humans was reduced to only 5-10,000 worldwide.

(Prior to that time there was a dramatically larger genetic diversity among humans.)

The program was about looking to the possibility of a caldera explosion around Sumatra, I believe, as the cause of the cataclysm. Particles apparently blocked the sun and killed most vegetation and life.

Anyway, something did happen. Looks like there are some theories as to what that may have been.

[Mike Darancette]

The program was about looking to the possibility of a caldera explosion around Sumatra, I believe, as the cause of the cataclysm.

When you take a cube of Sulfur rich material almost 9 miles on a side and eject it 10-20 miles into the air in one explosive event as happened with the Toba Caldera 74,000 years ago you can expect very bad things to happen.