Evolution affects humans too.

I present to you 5 facts.

1: Civilisation started after early homosapiens migrated from Africa into hostile ice age Europe.
2: Adaptions occur more frequently when an animal enters a new environment.
3: By far the most important adaption in recent human evolution is the brain. A neanderthal with a human brain would not be significantly worse or better off than a human.
4: Physical adaptions take longer to evolve than the simple increase in size of the neo-cortex.
5: Humans do have a plethora of physical adaptions to various environments.

Once human beings developed language, both written and oral, a new kind of evolution was able to take place, a kind of 'memetic' evolution. That is, we are now able to preserve the information that the previous generation had gained into the memory of a 'social superorganism' through things like stories, religion, rituals, etc.

It was now no longer necessary to make the same mistakes and relearn the same concepts at the previous generation. We were now able to sustain a prolonged thought process, through the generations. This type of evolution is much faster than  the physical variety and worked hand-in-hand with our increasing brain size.