Quantum biology is an emerging area of research that’s uncovering important features of the cellular signalling networks in living organisms. In networks of tryptophan, a protein-building amino acid, scientists have discovered a process called superradiance that amplifies and efficiently transmits information to and from cells. With implications for quantum information processing, treating Alzheimer’s and dementia, and uncovering more about the microtubules in our brains, quantum biology promises to yield some important clues about cognition in natural neural networks.