The Story of Time and Clocks explores the development of systems of recording and measuring time from the earliest calendars to the latest in quartz watches. The reader learns about natural clocks (stars, sun, moon, and weather cycles), the advent of calendars around the world, the history of clock making, how we measure time zones, and why we get jet lag. Organized chronologically from ancient history to the present, the volume is illustrated throughout with colorful photographs and drawings of artifacts and objects. Along with boxes which highlight inventions, personalities, and amazing facts, The Story of Time and Clocks supplies the reader with a timeline, a glossary and an index. The Signs of the Times series presents the history of basic systems of communication and calculation for children aged eight to ten.