A desert is a sandy or pebbly territory that lacks or has little vegetation because of an almost total absence of rain. It is also an unpopulated and undeveloped area. The word 'desert' is very present in the semantic range. It alludes to the most arid ecosystems on the planet but it also evokes historical, literary, philosophical and religious concepts.
The concept of a desert is intimately tied to mankind's destiny. It was the desertification process that converted dense tropical rain forests into African savannas, which in turn favored the first hominids to walk the land and the eventual appearance of the 'Homo' genus in primeval Africa....
Title: Deserts: Future's thermometers (full documentary)
Published on Jan 3, 2014
Uploaded by: New Atlantis Full Documentaries
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