Origin of fairy circles: Euphorbia hypothesis disproved

Researchers led by Göttingen University examine the long-term results of an experiment from more than 40 years ago. The fairy circles of the Namib are one of nature's greatest mysteries. Millions of these circular barren patches extend over vast areas along the margins of the desert in Namibia. In 1979, G.K. Theron published the first research about their origin. His hypothesis was that poisonous substances from Euphorbia damarana leaves induced fairy circles. As part of a new study, scientists from the University of Göttingen and the Gobabeb Namib Research Institute located the original euphorbia plants that were part of Theron's study. Four decades later, the researchers are now able to conclusively disprove Theron's original hypothesis.
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