On Apr 3, 2:47?pm, "Wayne Lundberg" >
wrote:

> Nor did humans have anything to do with the evolution of the Sahara
> wasteland. But that's another story.

I flew up the Nile from Aswan on my way to see the temple at
Abu Simbel and the lady next to me remarked how it was a shame that
there never was any water down there.

I told her that I could see dozens of dry watercourses (wadis) below.

Wadi is Arabic for water. Spanish words like "agua" and "guado" come
from wadi, as does the name of the Guadalquivir river in Spain.

If you saw "The English Patient", you may recall that the
archaeologist left the blonde-haired lady in the cave of the swimmers
where there were pictographs on the walls of people swimming
perhaps 10,000 years ago.

That cave really exists. There was a video about the reason for the
climatic changes in North Africa. As I recall, the desert was formed
because there was *less* heat in the summer, but I don't recall the
details.