38% of World's Land in Danger of Turning into Desert

Photo via ICRASN

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If you're not familiar with desertification, it might be time to get acquainted. The term describes the process where land in drier areas becomes subject to 'extreme deterioration' as a result of human activities. It can be caused by any combination of the following: overgrazing, extracting too much water from aquifers...Read the full story on TreeHugger