The boundaries of the heat zones will cease to exist, since at any latitude the Sun will become a rising and setting luminary. The sun will pass through the zenith only at the equator, and at the poles will always be on the horizon (in the absence of an atmosphere). However, as at present, the insolation conditions will monotonically decrease from the equator to the geographic poles.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.