Aren't the tallest people found in Africa? Hasn't it been postulated that the height was a result of leaving the forest for the savannah, where it was beneficial to be tall enough to see over the grasses, and the longer strides helped in hunting?
Karl Popper's "Paradox of Tolerance". If we tolerate intolerance, intolerance will flourish. In other words: if a society is tolerant without limit, its ability to be tolerant is eventually destroyed by the intolerant. Tolerating bigotry allows bigotry to spread. Exclusion isn't always a dirty word. Tell your local Nazi to F off today.
Answer: Well climate is just one factor that affects natural selection. In general homo sapiens have steadily increased in size over the millenia for various reasons. Recently there has been a trend in humans becoming smaller in some populations.
This is my Indian summer ... I'm far more dangerous now, because I don't care at all
Wait...if this is true, shouldn't Eskimos be bigger than Samoans?
Eskimos are always wearing thick layers of clothes, while Samoans are essentially naked. Hence, Eskimos are warmer than Samoans. Basic science.
Hundreds of years from now, it will not matter what my bank account was, the sort of house I lived in, or the kind of car I drove... But the world may be different because I did something so bafflingly crazy that my ruins become a tourist attraction.