CNN —
It’s hard to green the desert. Take China, or Africa’s Sahel region, for example. Their “Great Green Walls,” grand projects to beat back encroaching desert by planting trees, have required decades of slog, innumerable saplings and billions of dollars – and even then, critics have questioned how sustainable these solutions are.
The United Arab Emirates (UAE) is 80% desert. Only 0.7% of land is arable and it imports more than 90% of its food. Unsurprisingly, the oil-rich nation has proved fertile ground for companies aiming to change those statistics, as the UAE attempts to
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