Explore the complexities of human behavior change in this 33-minute lecture from The Royal Institution. Delve into the science behind why simply knowing what to do isn't enough to solve societal issues like climate change, obesity, and smoking. Learn about the three key conditions for behavior change, the concept of the "Green Hub," and how to measure behavior effectively. Discover how behavioral science extends beyond individuals to impact broader contexts. Gain insights from experts in health psychology, cognitive science, and behavioral insights as they discuss the balance between personal freedom and societal well-being. Examine real-world examples and applications of behavior change interventions, and understand the importance of basic science in developing effective strategies for positive societal transformation.