In parts of Africa and Australia, wide expanses of desert grasslands are pockmarked with perfect circles of bare red soil. For years, scientists have debated their possible cause, but in 2017, researchers may have finally cracked the mystery.
"Fairy circles" are mysterious shapes that have appeared on a desert in Namibia. 00:02
Some believe termites are responsible for the "fairy circles" in Namibia. 00:46
Some believe the "fairy circles" in Namibia are the result of grass competing for resources. 01:10
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