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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: Bilow who wrote (125946)3/11/2004 11:43:23 PM
From: Jacob Snyder  Respond to of 281500
 
There is also some evidence that, about 75,000 years ago, there was a "genetic bottleneck", where the entire human population on the planet was reduced to as low as 15,000-50,000 people. Possibly caused by a volcanic eruption in Toba, Indonesia, that threw ash into the upper atmosphere, blocking sunlight, causing a sudden sharp temperature decline planetwide. The main evidence of this, is the lack of genetic variability among all humans, compared to other species. en.wikipedia.org



To: Bilow who wrote (125946)3/12/2004 7:51:45 AM
From: smolejv@gmx.net  Respond to of 281500
 
Hi Bilow - (of course) you got the point. Same thing as the fact Mississipi makes (or used to - see Mark Twain) X miles of short cuts per year, so in 1700 it ended somewhere on Hispaniola and by now it should reach no further than St Louis.


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