The ups and downs of a mega-lake

Phys dot org ^ | July 9, 2020 | University of Tubingen

[SunkenCiv]

Better than its tailwaters. :^)

[JeanLM]

Noyt questioning existence of a wet sahara; just the possibility that early herders made it a desert.

The world population which was in the low millions, had spread to all parts of the planet 11,000 years ago. There weren’t enough to affect the climate anywhere. They were lucky to have survived the 100 year long cold spells that occurred 10,000 and 8,000 years ago.

Killed a lot of mega fauna though. Lucky for us they were a tough group.

[SunkenCiv]

I wholeheartedly agree. While herding has its fans (at least one on FR who believes that grazing *restores* the foliage-supporting landscape), cattle are easier on the flora than are sheep, but cattle also grow slower and larger and require more water; as the natural dessication of the landscape proceeds, sheep tend to predominate.