When and how did natural selection act in human evolution? Is natural selection at work in the human population now?

Natural selection worked before and is working now. It lies in the fact that weak representatives of the species die, die, or at least cannot continue their genus for a number of reasons. If a person fell ill, was born with an illness, then he would soon die. Also, the weakest died from other animal species and from natural factors. But in our time, natural selection is greatly slowed down. Humans cure disease, protect the weaker, and are not exposed to much threat from other animals and natural disasters.