The Washington Post yesterday carried this in-depth look at recent discoveries regarding the Y chromosome. By comparing the human Y with its chimpanzee cousin, scientists have discovered that far from being well on its way to evaporating into oblivion, the human Y has barely changed at all in at least 6 million years. This in spite of the fact that the Y chromosome can't "fact check" itself the way X chromosomes can. Let's hear it for the boy!