Coming back to 74’s original article that started this thread, it is excellent. I love the advances in science being made via genetic studies. Concerning the ice age changes in the genetic stock noted in the article, I wonder to what extent people were genetically adapted to living in an ice age climate. It seems plausible to me. I know that I am much more suited to a cold climate than to a warm one. You couldn’t pay me enough to live in a tropical setting or anywhere where temps in the 90’s occur frequently in the summer. Were I to move again, it would be further north.