Modern science reveals the environmental forces that have shaped human history. This series explores how cutting-edge science is changing the way we think about the ancient past - restoring the environment to its place as a key driver of human history. Throughout the series, top historians and archaeologists share with us how new collaborations with the scientific community, and a host of new data on the state of our planet, is providing them with fresh insights on how climate, disease and vulcanism have affected the course of human history.