This was the question posted by articles on Yahoo! and CNN a few days back. I was surprised that there was a “long-held view that natural selection has ceased to affect humans because, “almost everybody now lives long enough to have children”.

I had always assumed that evolution always occurs. It simply would not make sense any other way. If evolution was not still occurring, it would seem to imply that every individual is reproducing at a similar rate. Evolution is survival of the fittest, but even though everyone reproduces, there are obviously some who reproduce more and some who do not reproduce at all for various reasons. Why isn’t it obvious that evolution is still occurring because of this? Plus, there are those who choose not to have kids, some who choose to have lots of kids and some who don’t have kids.

But what’s more likely is that there are major gaps in my understanding that lead me to assume this from the start.