blogspam of<p><a href="https://blog.frontiersin.org/2017/03/14/did-humans-create-the-sahara-desert/" rel="nofollow">https://blog.frontiersin.org/2017/03/14/did-humans-create-th...</a><p>which is in itself a summation of this David K. Wright paper, complete with images and references:<p><a href="http://journal.frontiersin.org/article/10.3389/feart.2017.00004/full" rel="nofollow">http://journal.frontiersin.org/article/10.3389/feart.2017.00...</a>