Dr. Suzana Herculano-Houzel is a Professor of Psychology and Biological Sciences at Vanderbilt University. In the lab, she compares brains to find out what they are made of and what difference that makes for the organism in terms of its abilities. She is interested in finding out how many neurons and other cell types brains have, determining whether brain size matters, and examining how numbers of cells correspond to cognitive abilities. Suzana is not only a scientist, but also a musician. From an early age, she received formal training in classical music, including the piano and flute. While Suzana was a graduate student in Cleveland, she decided to learn to play the cello. In addition, Suzana also previously self-taught herself to play classical guitar and just recently started taking formal lessons. She received her B.S. in Biology from the Federal University of Rio de Janeiro in Brazil and completed her M.S. in Neuroscience at Case Western Reserve University. She was awarded her PhD in Neuroscience from Pierre and Marie Curie University in Paris, and conducted part of her graduate work at the Max-Planck Institute for Brain Research. Suzana served on the faculty of the Federal University of Rio de Janeiro before joining the faculty at Vanderbilt where she is today. She is the recipient of the Scholar Award in Understanding Human Cognition from the James S. McDonnell Foundation, as well as the José Reis Prize of Science Communication. In addition, Suzana has authored seven books for the general public on neuroscience, including her recently published book The Human Advantage: A New Understanding of How Our Brain Became Remarkable. She has written and presented the TV series Neurológica, has contributed over 260 to the Folha de São Paulo newspaper, and has written for the Scientific American Brazil magazine. In our interview, Suzana shares stories from her life and science.