China's 'Green Great Wall' tames desert growth, but scientists warn the fight is not over

PHYSorg
Jul 13, 2026, 4:01 am105 ptsTrending
For half a century, millions of workers have repeated a task across the deserts in northern China: inserting forearm-length sticks into shifting sand, first in a row, then in an intersecting line, gradually forming a grid. Then saplings are planted at the center of each small square.

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