I read about it once. I think it was up to medieval times where sahara had lots of green batches and oasis? Though thats in the range of natural climate change.Btw. most Alpine passes were unpassable from 900 to 1300, we had a mini ice age then.
My, i'm getting old. I meant RNA polymerase.Btw, i came across this article while searching for the right term.
There's always a justification to be
abused somewhere.