Explore the fascinating world of quantum mechanics in this 56-minute lecture by theoretical physicist Sean Carroll at The Royal Institution. Delve into the history of quantum discoveries, from Einstein and Bohr to modern interpretations, as Carroll guides you through the most intriguing subject in science. Learn about mind-bending concepts like Schrödinger's cat and the many worlds interpretation, and discover why quantum mechanics, despite its mysterious nature, remains our best explanation of reality. Gain insights into Carroll's favorite theories and understand how this revolutionary field continues to shape our understanding of the universe.