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 artists behind increasingly elaborate crop-circle patterns are most likely skilled in math, necessary to plot epic designs, and technologically savvy enough to employ tools like microwave ...

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 ...