Humanity is in the midst of great transformation. Our world is undergoing three types of revolution, all co-dependent: physical, psychic and cosmological. The media report dramatic changes due to climatic disruption: earthquakes, floods, hurricanes, and volcanic eruptions. We are also witnessing a surge in popular protest, as decades of corrupt or inefficient social systems face their nemesis. Yet within this outward turmoil more subtle shifts are occurring, such as the transition of the 'modern' mind from the industrial-globalisation model towards a life-sustaining, ecological-cosmological world-view. Western thinking, with its linear notion of history and progress, has robbed us of enchantment. Many ancient teachings (both spiritual and secular) and many indigenous cultures speak to us of cyclic processes over long periods of historical time. This book looks at the concept of the Hindu Yugas (great cycles) that reflect the rise and fall of civilisations, as well as ebbs and flows in our moral and intellectual health. In the years to come, humanity will adapt itself to a world in revolution, and our lives will be re-energised. This book provides a user's guide to new worlds and new world-views, and to 'a fresh release of spiritual energy'.