Why does fertile land turn into sand and how exactly did this fertile land form in the first place?
In: 10
Weather patterns across the globe were very different during the last ice age.
Most of Europe and North America were in a permanent winter and Northern Africa in turn got a lot more moisture turning it into fertile land.
As the weather patterns changed the Sahara started to form.
But it appears that Humans may have accelerated the process considerably. There is evidence that humans raising grazing animals on the edges of the growing Sahara ate enough of the plant matter to encourage the growth of the desert. That combined with deforestation destroyed the soils ability to retain moisture.
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