Catalyst returns to take you to the heart of the biggest science stories from Australia and around the world, revealing the latest understanding of how science affects our lives – from deep inside the human body to the furthest reaches of outer space. Each hour-long program delves into the very latest science, meets researchers at the cutting edge, and shows how scientific thinking is changing the lives of everyday people.
Mathematician Lily Serna explores the strange world of sensory perception, using magic and illusions to reveal the difference between how we perceive the world, and reality.