Bacteria Could Help Stop Desertification

From Slashdot:

In attempt to slow down desertification, a student at London's Architectural Association has proposed a 6000 km sandstone wall that will not only act as a break across the Sahara Desert, but also serve as refugee shelter. Last fall it won first prize in the Holcim Foundation's Awards for Sustainable Construction, and will use bacteria to solidify the sandstone.

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