Author Archives: gcochran9

Something else

Razib has talked about this – here’s what I think. The various sweeping alleles that have made Europeans and North Asians have light skin  were not favored because they helped you garner extra vitamin D, at least not mostly. This … Continue reading

Posted in Genetics, Skin color | 93 Comments

Infertilty Belt

It used to be the case (considerably less so today) that a significant fraction of women in central Africa, up to tens of percent in some areas, were infertile or subfertile, due to various STDs.  This seems to have been … Continue reading

Posted in Uncategorized | 24 Comments

TLRs, PAMPs, and Alley Oop

I hear that some Eurasians  – probably more than some – have Neanderthal or Denisovan versions of TLRs.  Not surprising: we’ve already seen this happen with other immune system genes – HLA variants , OAS1, STAT2  all have adaptive variants … Continue reading

Posted in Uncategorized | Tagged , | 32 Comments

First* Peoples

There are two new papers out on the early colonization of the Americas, one in Science and one in Nature.  The Science paper claims that all Amerindians stem from a single Siberian population that moved into Beringia about 23,000 years … Continue reading

Posted in Uncategorized | 114 Comments

Baby Steps

Very early settlers of North America had at least some ability to make water-crossings, since there is  there is evidence of early human activity on the Channel Islands off California (Santa Rosa, for example).  But by the time they crossed … Continue reading

Posted in Uncategorized | 23 Comments

Brain Topography

Although Richard Nisbett has written about long-term differences in cognitive style between East and West,  he is, I think, dismissive of the possibility that biology might explain such differences, or any other mental differences – at least publicly. He had … Continue reading

Posted in Uncategorized | 52 Comments


It’s that time again, time to contribute. You can send funds via Paypal, by check (to me or to West Hunter  Incorporated if you’re after deductibility). West Hunter’s purpose is the advancement of education and science in anthropology and evolution. … Continue reading

Posted in Uncategorized | 10 Comments