Monday, September 20, 2010

Early Humans and Early Dogs

There are new theories on when early humans left Africa for the rest of the world. Findings of ancient stone tools suggest they may have left Africa more than 70,000 years ago, even though DNA researchers say it is more likely the exodus happened about 60,000 years ago.

The scientists who support the earlier times say the DNA results are not quite reliable. The reason would be that the DNA research is made on present day humans without any ancient DNA to compare.

As far as I know, DNA research have also suggested dogs and humans started to live together on Earth about 40,000 years ago. If the DNA research on humans suggest a date which is too late, perhaps the DNA research on dogs do as well. In that case, dogs and humans may have joined forces much earlier than 40,000 years ago. I like to think this is true.

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