Renewable force

摘要

Through the ages, the countries of theMiddle East and North Africa have beenknown for their great feats in engineering.The marvels are legion, from theMesopotamian irrigation systems tothe Great Pyramid. But did you knowthat the first concentrated solar steamengine was built near Cairo in 1914? Acentury later, solar energy is again puttingthe region on the cusp of new exploits,this time in renewable energy.