How to green the world's deserts and reverse climate change. [VIDEO]

How To Green The World's Deserts And Reverse Climate Change

Mar 11, 2013 Educational
In this segment from TED, Allan Savory talks about how the world's deserts seem to be spreading and overtaking two-thirds of the world's grasslands through desertification. Allan Savory is a Zimbabwean biologist and environmentalist.
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