Could quantum mechanics help explain how life began? Professor Jim Al-Khalili introduces quantum biology, a field exploring how subatomic behavior might be essential to life processes like photosynthesis and smell. He explains how particles can take multiple paths at once and why strange behavior may hold clues to the origin of life itself. Professor Al-Khalili is a theoretical physicist at the University of Surrey, as well as a prominent author and broadcaster. Jim has written 14 popular books about science translated into 26 different languages. His latest book, The Joy of Science , applies the principles of science to our daily lives. Jim is a regular presenter of science documentaries, and he hosts the long-running weekly BBC Radio 4 programme, The Life Scientific.