CNN —Round discs of barren dirt known as “fairy circles” look like rows of polka dots that can spread for miles over the ground. Fairy circles were previously spotted only in the arid lands of Southern Africa’s Namib Desert and the outback of Western Australia. The results showed 263 dryland locations where there were circular patterns similar to fairy circles in Namibia and Australia. Fairy circles’ mysterious originsThe study authors also compiled environmental data where circles were spotted, collecting evidence that might hint at what causes them to form. But the question “What shapes fairy circles?” is complex, and factors that create fairy circles may differ from site to site, the study authors reported.

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Persons: ”, Emilio Guirado, Guirado, “, Stephan Getzin, Getzin, Fiona Walsh, Walsh, ” Walsh, ” Guirado, Mindy Weisberger Organizations: CNN, National Academy of Sciences, Multidisciplinary Institute, Environmental Studies, University of Alicante, University of Göttingen, University of Western, “, Scientific Locations: Southern, Western Australia, Spain, Namibia, Australia, Africa, Western Sahara, of Africa, Madagascar, Midwestern Asia, Southwest Australia, Germany, University of Western Australia, Northern Territory