Mathematics underlies everything – from how our universe holds itself together to how our cities run – and it sits at the forefront of discovery across topics such as AI, genetics and quantum mechanics. How do we make mathematics fun and inspire young people to want to pursue the world of numbers as a career? Join us at a special Spark Salon at Hay Festival for a very special alternative maths lesson. Pilcher is a science writer, maths champion and author of Bring Back the King: the New Science of De-Extinction. Steckles is a member of Matt Parker’s Think Maths team and an award-winning science communicator.