Melvyn Bragg's In Our Time series regularly enlightens and entertains substantial audiences on BBC Radio 4. For this book he has selected episodes which reflect the diversity of the radio programmes, and takes us on an amazing tour through the history of ideas, from philosophy, physics and history to religion, literature and biology. We can discover the reasons for the fall of the Byzantine empire, and why women were persecuted as witches in the seventeenth century. What shape is the origin of life? Where does our calendar come from? We can unearth the influence of prime numbers, Socrates and Tectonic plates. Melvyn Bragg orchestrates the ideas of leading academics in each field so that the dynamic and lively discussion from the programmes comes through vividly on the page. IN OUR TIME brings to life the signposts of history, the moments that significantly changed the world as we know it, and the individuals and ideas that made us what we are today.