Robert Plomin is MRC Research Professor in Behavioural Genetics at the Institute of Psychiatry, Psychology & Neuroscience, King’s College London. In 1995, he began the Twins Early Development Study (TEDS), which has followed 10,000 pairs of UK twins from infancy through early adulthood and has been continuously funded for 25 years as a programme grant from the Medical Research Council. He has published more than 800 papers and is the author of the best-selling textbook in the field as well as a dozen other books. His most recent book is Blueprint: How DNA Makes Us Who We Are (Allen Lane, October 2018; paperback by Penguin, June 2019). Blueprint describes how the DNA revolution is transforming science, society, and the way we think about ourselves. His email is robert.plomin@kcl.ac.uk.