Steven Strogatz is the Jacob Gould Schurman Professor of applied mathematics at Cornell University. He studied at Princeton, Cambridge, and Harvard and taught at MIT before moving to Cornell in 1994. A renowned teacher and one of the world’s most highly cited mathematicians, he has blogged about math for The New York Times and has been a frequent guest on RadioLab. His honors include a Presidential Young Investigator Award; MIT’s highest teaching prize; a lifetime achievement award for the communication of mathematics to the general public; and membership in the American Academy of Arts and Sciences. He is the author of Nonlinear Dynamics and Chaos, Sync, and The Calculus of Friendship. His latest book is The Joy of x.