For many years, scientists have adhered to a straightforward principle: larger bodies mean larger brains. A fascinating new study has challenged this idea, indicating that brain size can only increase to a certain extent, though this exception does not seem to have applied to humans. Our brains have evolved 23 times faster than those of other mammals, resulting in much larger brain sizes. Although it was previously believed that brain size scaled proportionally with body size, the study suggests there may be an upper limit to how large brains can grow. Researchers from the University of Reading and Durham University have gathered an extensive dataset of brain and body sizes from approximately 1,500 species to address long-standing debates about brain size evolution. They’ve published their research in the latest edition of Nature Ecology and Evolution. Brain’s Evolutionary Explosion Linked to Ancient Retrovirus Infection Three Thousand Years Ago Human Brain Size Decreased, Says Study       Read moreSection: NewsEvolution & Human OriginsHuman OriginsScienceRead Later