A fossil smaller than a human fingernail has revealed a complete ancient brain, turning a speck of stone into a detailed map of early animal evolution. Encased inside this tiny creature are preserved ...

A new study published in Nature suggests that the neural foundations of spatial navigation—the brain's internal "GPS"—may have emerged far earlier in evolution than previously believed. The research, ...

An adult specimen of the comb jelly Mnemiopsis leidyi seen from above. In the center of the image, it is possible to ...

At first glance, the human brain might appear to be a marvel of engineering—a seamless interface for sensory input, cognitive control, and motor output. But if you peer beneath its sophisticated ...