Sunday, December 10, 2006

Recent Human Evolution

This is really cool:
"Throughout most of human history, the ability to digest lactose, the principal sugar of milk, has been switched off after weaning because there is no further need for the lactase enzyme that breaks the sugar apart. But when cattle were first domesticated 9,000 years ago and people later started to consume their milk as well as their meat, natural selection would have favored anyone with a mutation that kept the lactase gene switched on."
The change may have been as recent as 3,000 years ago. Once again, throw this on the pile of data that supports evolution. (In your face creationism and Intelligent Design!)

Figure it out people, ignoring scientific facts isn't going to help Americans compete.


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