These mysterious circular-shaped patches of ground are starting to appear at sites all over the world.
The original inhabitants of Australia have much to teach modern scientists about the nature of this intriguing phenomenon.
Ecologists believe that they may have finally solved the mystery behind Namibia's mysterious circles.
These mysterious circular, grass-ringed patches are still leaving scientists scratching their heads.
Strange circular, grass-ringed patches have been discovered over hundreds of square kilometers.
The mysterious circles of the Namibian grasslands don't appear to have been caused by termites after all.
Mysterious grassless rings appearing in the South African desert are believed to be made by termites.
Nobody is able to explain the strange, bare circular patches that appear in the Nimibian grasslands.