Find out how the first farmers lived and worked. Discover the Viking world. Learn about the Arab Spring. Beautiful illustrations, 3-D graphics, clear annotations, and fun facts bring history to life and show how it fits in to the world at large. Whether your child is a visual learner or a geography buff, When on Earth? is perfect for any student of history, giving a guide to our shared past and a birds-eye view of the history of life on Earth.