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Pastimes : Don't Ask Rambi
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To: Maurice Winn who wrote (66215)12/17/2004 1:03:25 PM
From: Ilaine  Read Replies (1) of 71178
 
The human skull has only been a human skull for 100,000 years:

But early humans used fire and made tools about 800,000 years ago. Maybe even 1.5 million years ago. Controlling fire is something that only humans do.
news.bbc.co.uk

The differences in skulls probably has more to do with language than anything else.

Also, cooling the brain pan. Efficient use of energy by our muscles and brains gives a strong reproductive advantage, but the brain needs to be cooled.
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