Friday, September 09, 2005

[geek] 30-second science blogging - Human brains still evolving?

I seem to remember reading this hypothesis a few months ago: that there are measureable evolutionary changes in human brains that occurred as recently as 6000 years ago:
The human brain may still be evolving. So suggests new research that tracked changes in two genes thought to help regulate brain growth, changes that appeared well after the rise of modern humans 200,000 years ago. That the defining feature of humans — our large brains — continued to evolve as recently as 5,800 years ago, and may be doing so today, promises to surprise the average person, if not biologists.
The whole article is well worth the click, presenting the arguements in favor and against this theory pretty well. The article also does a good job of noting that such a finding, if true, could pretty quickly play into eugenicist and rascist rhetoric. Still... we may not be at any kind of static pinnacle; how cool is that?

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