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.

>>10
I think you are talking about Cro Magnon man who had a larger brain capacity than modern humans they were a small branch off homo sapiens stuck in ice age europe with small population. As the climate changed more populous humans from asia minor migrated into europe and interbred. It is estimated that 30% of Scandinavian ancestors were cro magnon and the percentage decreases as indigenous people go from northern europe to the mediteranean.