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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .In southwestern Africa's Namib desert, the lack of rainfall keeps grass sparse.
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3 .But in some areas, mysterious rings of grass with bare centers appear and thrive.
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4 .Now scientists have discovered these so-called fairy circles are indeed created by wee little creatures--termites.
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5 .The work is in the journal Science.
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6 .Many organisms live in and around fairy circles, which range from one to 50 meters in diameter and persist for decades.
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7 .But scientists found only one species consistently inhabiting even the youngest fairy circles.
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8 .The sand termite Psammotermes allocerus is thus the most likely culprit behind the rings.
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9 .How do termites make fairy circles?
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10 .Living grass sucks up rainfall and loses the liquid to evaporation.
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11 .When termites cluster together, feeding on and destroying vegetation, they leave a roughly circular bare patch that stores more water than the surrounding soil.
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12 .The fairy circle thus acts as a water reservoir for the sand termites, the grasses around the edge and other thirsty organisms.
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13 .So maybe we should start calling these rings "termite circles."
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14 .Nah, sounds a bit wooden.
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15 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
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