Seasons - Greenwich Guide to...S. Author:Graham Dolan This series explores the concept of time in the broader context of Earth and space. It explains how the Sun, Moon, Earth and stars play a part in making time. The series breaks down the concepts explored in "Time and the Millennium" and explains them for a younger readership. This title looks at the Earth's orbit round the Sun and how it tilts t... more »o give us seasons, extremes of climate and differences between Northern and Southern Hemispheres.« less