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Efforts are under way to make cedar trees sprout up in Lebanon again. Plus: Could desalination help combat water scarcity the world over? And: Can trees help reduce the problems of droughts in Tanzania?

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Tanzania , Lebanon , , Globalization Program , Reforestation , Renaturization , Refugees , Water Scarcity , Desalination , Drinking Water , Energy , Solar Technology , Global Ideas , Erosion , Justdiggit , Re Greening ,