Round discs of barren dirt known as “fairy circles” look like rows of polka dots that can spread for miles over the ground. The phenomenon’s mysterious origins have intrigued scientists for decades — ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Fairy circles were ...

The human eye is drawn to circular patterns in nature, from crop circles in the movie Signs to the ripples in a pond. But there's another awe-inspiring, naturally-occurring, circular pattern that ...