In the 1860s, scientists believed they were on the verge of uncovering the brain's biggest secret: how the brain's signals travel through the body. They believed these impulses travelled uninterrupted along a massive web of tissue. But...

There’s a black stain on the history of neuroscience. But don’t worry, that’s actually a good thing! Thanks to Camillo Golgi’s mysterious “black stain” and Santiago Ramon y Cajal’s artistic talents, starting in the early 1900s, we...