Bright Edges of the World; The Earth's Evolving Drylands

Welcome to an electronic exhibit about the world's drylands.
Drylands include arid, semi-arid, and dry sub-humid areas all over the world. The aim of this exhibit is to show the importance these environments have in the lives of people everywhere, and the threats they face. Please choose a section of the exhibit below.
What are Drylands? Drylands: A Global Asset Drylands: A Global Concern
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Produced by: Smithsonian Institution and United Nations Environment Programme