Fairy circles are round gaps in arid grassland that are distributed very uniformly over the landscape and only occur along the Namib Desert in southern Africa and in parts of Australia. Scientists have got to the bottom of this with soil investigations and drones. The results suggest Australian fairy circles were caused by processes like the weathering of the soil by heavy rainfall, extreme heat and evaporation.
from All Top News -- ScienceDaily https://ift.tt/2SkuYC0
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