What did nature mean by this?

>>139573096
Nature has no meaning.

Believe it or not, brains are rather senstive to heat. Big brains don't do well in hot climates. And in cold climates human survival is more intellectually changeling: ways to survive winter need to be developed.

It's called Natural selection and evolution.

>>139573354

>Natural selection and evolution.

Things that don't result in different species being created for 5,000 Alex

>>139573625
What things do you think result in different species being created?

>>139573625
It's not a separate species - but given human populations separated for thousands and thousands of years, surely it's not a stretch to imagine these populations would develop differing traits based on their environment. If a population develops in a land without a winter, for instance, then mental skills used in planning for the future are not going to to develop as well.

>>139573096

skin tone to IQ correlation is actually meaningless.

there are underlying mechanisms that drive both of those things which are themselves not highly correlated.

>>139573096
>Irish IQ 92
>using outdated data

Irish Americans both in US and Canada score among the highest of all white ethnic groups, similar to British Americans. There has also been a steady rise in Irish IQ since the 92 figure was provided by Lynn. Irish IQ is likely right around 100

>>139575230

T. Potato mcnigger

>>139575230
All of the African countries are catching up as well but IQ studies comparing populations are now racist so we can't update them.