Scientists present evidence that the Sahara Desert periodically transitions from desert to a lush green environment and back. They also present theories about why this happens.

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Cast

Episode credited cast:
...
Himself - Narrator (voice)
Jen Smith ...
Herself - Geologist, Washington Univ. in St. Louis (as Jen Smith PhD)
Peter de Menocal ...
Himself - Ocean Geologist, Columbia Univ. (as Peter deMenocal PhD)
Nick Drake ...
Himself - Geologist, King's College London (as Nick Drake PhD)
Fekri Hassan ...
Himself - Geologist, Univ. College London (as Fekri Hassan PhD)
Rest of cast listed alphabetically:
Jonathan Keeble ...
Himself - Narrator
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Storyline

Scientists present evidence that the Sahara Desert periodically transitions from desert to a lush green environment and back. They also present theories about why this happens.

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Certificate:

TV-PG | See all certifications »
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Details

Release Date:

15 December 2009 (USA)  »

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