Indifference will be the downfall of mankind, but who cares?...
Here is a nice educational tool for all ages. The Bradshaw Foundation , an archeological web site, has set up a nice animation that tracks human kind expansion, from 160.000 to 8.000 years ago:
They base their tracking on the analysis of Mitochondrial DNA for men, and of the Y Chromosome for women, found on human fossils all around the globe, and on Radio Carbon dating of them.
This is great!
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