John Gabrieli is Grover Hermann Professor of Health Sciences and Technology and Cognitive Neuroscience at the Massachusetts Institute of Technology (MIT). He has dual appointments in the Department of Brain and Cognitive Sciences and in the Institute for Medical Engineering & Science at MIT. He is Director of the Martinos Imaging Center at the McGovern Institute for Brain Research and Director of MIT’s new program in learning sciences, the MIT Integrated Learning Initiative. He also has appointments in the Department of Psychiatry at the Massachusetts General Hospital and at the Harvard Graduate School of Education. He grew up in Buffalo, NY, received a B.A. in English from Yale (1978), a Ph.D. in Behavioral Neuroscience from MIT (1987), and was a postdoctoral fellow in the Psychology Department at Harvard. His research examines human brain development and how that varies in children. He is an author on over 300 publications in peer-reviewed scientific journals, including publications in \_Science\_ and \_Nature\_.

Florence Williams is a journalist, podcaster, and author of \_The Nature Fix: Why Nature Makes Us Happier, Healthier, and More Creative\_ (W.W. Norton, 2017), which \_The New York Times\_ calls “fascinating.” \_The Wall Street Journal\_ calls her writing “exceptional...droll and crisp,” which makes her feel like a pastry. She is a contributing editor at \_Outside Magazine\_ and a freelance writer for \_The New York Times, National Geographic,\_ and numerous other publications. She is also the writer and host of a new podcast series, “The XX Factor” for \_Outside Magazine\_. Florence won a 2013 \_Los Angeles Times\_ Book Prize for her first book, \_Breasts: A Natural and Unnatural History\_ and a 2017 Gracie Award for her recent Audible Original series, “Breasts Unbound.” A fellow at the Center for Humans and Nature and a visiting scholar at George Washington University, her work focuses on the environment, health, and science. She currently serves on the board of \_High Country News\_ and the Ted Scripps Fellowship Program at the University of Colorado. She lives in Washington, D.C.

Laurence Steinberg is the Distinguished University Professor and Laura H. Carnell Professor of Psychology at Temple University. He was educated at Vassar College, where he was elected to Phi Beta Kappa and graduated with honors and distinction in psychology, and at Cornell University, where he received his Ph.D. in Developmental Psychology. He is a Fellow of the American Psychological Association, the Association for Psychological Science, and the American Academy of Arts and Sciences. Dr. Steinberg is one of the world’s leading experts on adolescent development. Steinberg’s research has focused on a range of topics in the study of contemporary adolescence, including adolescent brain development, risk-taking and decision-making, parent-adolescent relationships, adolescent employment, high school reform, and juvenile justice. He has been a frequent consultant to state and federal agencies and lawmakers on child labor, secondary education, and juvenile justice policy. Dr. Steinberg is the author of approximately 400 articles and essays on growth and development during the teenage years, and the author, co-author, or editor of 17 books, including \_Adolescence\_, the leading college textbook on this age period; \_Crossing Paths: How Your Child’s Adolescence Triggers Your Own Crisis\_; \_Beyond the Classroom: Why School Reform Has Failed and What Parents Need to Do\_; \_The 10 Basic Principles of Good Parenting\_; \_You and Your Adolescent: The Essential Guide for Ages 10 to 25\_; and \_Age of Opportunity: Lessons From the New Science of Adolescence.\_