Humanity is still subject to evolutionary pressures. We are "natural" and what we do is "natural", and if something like our environment were to drastically change as an evolutionary pressure, selection would absolutely happen.
Consider a change in environment where, for example, oxygen levels drastically drop. That might make living at altitude deadly for those who don't have genetic adaptions to high altitude living.
As an extreme example, in ~500 million+ years when the sun starts expanding, you can bet natural selection will finish off non-extremophiles that aren't living deep within the Earth.
Consider a change in environment where, for example, oxygen levels drastically drop. That might make living at altitude deadly for those who don't have genetic adaptions to high altitude living.
As an extreme example, in ~500 million+ years when the sun starts expanding, you can bet natural selection will finish off non-extremophiles that aren't living deep within the Earth.