The Gobi Desert is the world's fastest spreading desert. It takes over 2250 miles of grassland every year. The Great Green Wall of China is one of the largest reforestation projects in the world. There have been over 66 billion trees planted. It's been in an effort to right against the expansion of the Gobi Desert. The expansion of the desert devastates agricultural land and creates sandstorms that wreak havoc on the populations on its edge.

This "new" Great Wall of China isn't built with stones, mortar, and sand, but instead with trees. The enemy they are defending themselves from now, though, is desertification. A report shows that dry lands, including desert, cover over 40% of the Earth's total land area. China has been worrying about their desert expansion problem since the 1970's, now, they are taking charge by helping reforest the Gobi Desert.