"Every year, more than 46,000 square miles of arable land turns to desert. As deserts spread--a process that keeps moving faster thanks to climate change and practices like clear-cutting--the UN estimates that more than 1 billion people will be directly affected. (…) Floating above the platform, giant balloons would capture water condensation. As the first treads roll over the soil, the machine uses a little water from the balloons to soften the ground. The last set of treads injects seeds, some fertilizer, and more water… Everything would run on renewable power, using a combination of solar towers, wind turbines, and a generator that creates electricity by harnessing the stark differences in temperature between day and night in the desert. The machine could theoretically capture enough energy that it can self-support an entire small city onboard. (…) The architects are currently working on developing the project on the Moroccan side of the Sahara Desert."
Fonte: http://www.fastcoexist.com/3028173/this-enormous-rolling-city-is-designed-to-re-plant-the-desert
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