Dr. Farouk El-Baz presentation at the Adbullah Al-Zayed:
"When The Desert is Green"

October 27th, 2008 

Bahrain - Dr. Farouk El-Baz delivered gave a presentation titled "When the Desert is Green" at the Adbullah Al-Zayed House for Bahraini Press Heritage. The Space images in his slide show revealed that the Deserts of North Africa & Arabia resulted from the alternation of wet and dry climate cycles; with the last wet cycle having ended 5,000 years ago. Radar images of Arab deserts have revealed numerous courses of rivers and streams that led to depressions where lakes formed. Water seepage in the substrate caused groundwater accumulation beneath lake basins and fracture zones.