The green Sahara episodes correspond with the changing direction of the earth’s rotational axis that regulates the solar energy in the tropical Atlantic Ocean.
I wonder if a scientific consensus exits regarding these geophysical data? Chances are there are many peer-reviewed papers.
Can temperate conditions in the Sahara actually be the more natural (i.e. the north polar glacier cap is minimal)? As many old sci-fi tales ended, I shall do the same. "Time will tell."
Thanks!