Nick Lane's book on mitochondria[1] has a section on adaptations to hot or cold places related to them. The topic is a bit more complicated than you might thin

Nick Lane's book on mitochondria[1] has a section on adaptations to hot or cold places related to them. The topic is a bit more complicated than you might think and I'm pretty sure that people of any race can adapt to colder climates though the brown fat response[2]. [1]https://www.goodreads.com/book/show/39001.Power_Sex_Suicide?from_search=true https://www.goodreads.com/book/show/39001.Power_Sex_Suicide?... [2]https://en.wikipedia.org/wiki/Brown_adipose_tissue https://en.wikipedia.org/wiki/Brown_adipose_tissue