Adele Peters — Fast Company
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. Many of them, living in places like Northern Africa and rural China, are already struggling with poverty, so the loss of farmland would be especially hard to handle.
One potential answer: An enormous mobile oasis that roams over drylands planting seeds. The Green Machine, originally designed by Malka Architecture and Yachar Bouhaya Architecture for the Venice Biennale, may some day be rolling around the borders of the Sahara Desert holding back the dust and sand.