Another crop circle has appeared in the English countryside — and this one's clearly been made by someone, or something, that understands math. At first glance, the strange ratcheted pattern ...

Grid cells are neurons with periodic spatial receptive fields (grids) that tile two-dimensional space in a hexagonal pattern. To provide useful information about location, grids must be stably ...

One odd feature is the grid itself ... Without a definitive pattern of where the theme answers would appear, I thought it would be a good idea to mark them explicitly with circles.