Just a few thoughts on human evolution: While still ongoing, clearly, there are some mitigating factors. The nature and ability of the human species to value each human life does slow down evolution in the "survival of the fittest" sense. In our world, all people (no matter how bad their genes or how unfit for survival they may be), all people are entitled to the same rights, protections, and potential to procreate. It actually might be argued that the most successful, intelligent, etc people in the world are less likely to produce many offspring than others, due to their pure dedication to their jobs/profession/etc.
Also, evolution works quickest when populations become isolated, allowing their gene pools to diverge separately. With the global community, most races, nationalities, etc are having their genes continually mixed with all others. So that will slow things down as well.
Also, since humans are becoming in such control of things like genetic engineering, health care, and on and on, the changes we make to ourselves are going to be more pronounced than what nature would try to do over, say, a million years.