China’s Crazy Plan to Keep Sand From Swallowing the World – Mother Jones

Can a “Green Great Wall” stave off environmental disaster?....
http://www.motherjones.com/environment/2017/08/china-plants-billions-of-trees-in-the-desert/

How to green the world's deserts and reverse climate change | Allan Savory

"Desertification is a fancy word for land that is turning to desert," begins Allan Savory in this quietly powerful talk. And terrifyingly, it's happening to about two-thirds of the world's grasslands, accelerating climate change and causing traditional grazing societies to descend into social chaos. Savory has devoted his life to stopping it. He now believes -- and his work so far shows -- that a surprising factor can protect grasslands and even reclaim degraded land that was once desert.
Interview:
https://youtu.be/vpTHi7O66pI