Full TranscriptThis podcast was produced for the Kavli Prize by Scientific American Custom Media, a division separate from the magazine’s board of editors. He shared the Kavli Prize in Neuroscience in 2020 for answering this basic question. The Kavli Prize recognizes scientists for pioneering advances in the fields of astrophysics, nanoscience and neuroscience. The Kavli Prize is a partnership among the Norwegian Academy of Science and Letters, the Norwegian Ministry of Education and Research, and the U.S.-based Kavli Foundation. This work was produced by Scientific American Custom Media and made possible through the support of the Kavli Prize.